<WORD ID="961" WORD="o'clock (adv.)" EXPLANATION="according to the clock, the exact hour" EXAMPLE="Let's meet at ten o'clock in the morning." WAVE="O_CLOCK" />
<WORD ID="962" WORD="obey (v.)" EXPLANATION="to follow orders, to do what you are told to do" EXAMPLE="When diving you should obey these rules. Otherwise you could be in danger." WAVE="OBEY__V_" />
<WORD ID="963" WORD="object (n.)" EXPLANATION="something that can be seen or touched" EXAMPLE="The detective found many things in the room such as a knife and other objects that helped him solve the crime." WAVE="OBJECT__" />
<WORD ID="964" WORD="obligation (n.)" EXPLANATION="something a person must do because of law or a promise" EXAMPLE=" We have an obligation to finish this project. We have no other choice" WAVE="OBLIGATI" />
<WORD ID="965" WORD="observe (v.)" EXPLANATION="to watch with interest" EXAMPLE="You can stand here and observe what is going on below." WAVE="OBSERVE_" />
<WORD ID="966" WORD="occupation (n.)" EXPLANATION="job, a person's usual work" EXAMPLE="I'm a doctor. What is your occupation?" WAVE="OCCUPATI" />
<WORD ID="967" WORD="ocean (n.)" EXPLANATION="the large bodies of salty water that cover most of the earth" EXAMPLE="Baja lies between the Pacific Ocean and the Sea of Cortez." WAVE="OCEAN__N" />
<WORD ID="968" WORD="October" EXPLANATION="the tenth month" EXAMPLE="There was a lot of rain in October this year. It is usually rainy in the autumn." WAVE="OCTOBER" />
<WORD ID="969" WORD="of course" EXPLANATION="certainly" EXAMPLE=" Of course I know how to make spaghetti! It's very easy. You just boil salted water and put it in." WAVE="OF_COURS" />
<WORD ID="970" WORD="offer (v.)" EXPLANATION="to make available" EXAMPLE="This cafe offers the best cakes and coffee in town. Let's go in." WAVE="OFFER__V" />
<WORD ID="971" WORD="office (n.)" EXPLANATION="a room or rooms used as a place of business" EXAMPLE="You can get information about the tour at our downtown office." WAVE="OFFICE__" />
<WORD ID="972" WORD="official (adj.)" EXPLANATION="formal, ceremonial, approved" EXAMPLE="The official opening of the Festival is next week. The President will be there." WAVE="OFFICIAL" />
<WORD ID="973" WORD="often (adv.)" EXPLANATION="many times" EXAMPLE="I often go swimming and diving in the summer, almost every week." WAVE="OFTEN__A" />
<WORD ID="974" WORD="oil (n.)" EXPLANATION="a greasy liquid from plants or minerals that does not mix with water" EXAMPLE="The best oil for salads is made from green olives in late summer." WAVE="OIL__N__" />
<WORD ID="975" WORD="old (adj.)" EXPLANATION="1. having lived or existed for a long time 2. 7 years old - of a certain age" EXAMPLE="My great-grandmother is very old. She remembers events that happened before the First World War." WAVE="OLD__ADJ" />
<WORD ID="976" WORD="olive (n.)" EXPLANATION="the fruit of a Mediterranean tree" EXAMPLE="These olives are green now, but they will turn black later on. They are good for oil and for eating." WAVE="OLIVE__N" />
<WORD ID="977" WORD="one (det.)" EXPLANATION="a single person or thing" EXAMPLE="Paris is one of the most interesting cities in the world. Rome is another." WAVE="ONE__ADJ" />
<WORD ID="978" WORD="onion (n.)" EXPLANATION=" a vegetable plant which has a bulb with a strong smell and taste" EXAMPLE=" Onions can make you cry, but they add flavour to any dish." WAVE="ONION__N" />
<WORD ID="979" WORD="only (adv., adj.)" EXPLANATION="1. not more than 2. without others" EXAMPLE="1. It's very close to here, only five stops on the train. 2. Istanbul is the only city in the world on two continents." WAVE="ONLY__AD" />
<WORD ID="980" WORD="open (adj.)" EXPLANATION="not closed" EXAMPLE="When is the museum open? I want to see the Persian carpets." WAVE="OPEN__AD" />
<WORD ID="981" WORD="open (v.)" EXPLANATION="to allow people to enter" EXAMPLE="The museum opens at 10 o'clock in the morning and closes at 7 o'clock in the evening." WAVE="OPEN__V_" />
<WORD ID="982" WORD="opinion (n.)" EXPLANATION="a personal belief that is not certain" EXAMPLE="Everyone has a different opinion about the new film. Some love it and some hate it." WAVE="OPINION_" />
<WORD ID="983" WORD="opposite (n.)" EXPLANATION="person or thing that is different from another" EXAMPLE="Good is the opposite of bad." WAVE="OPPOSITE" />
<WORD ID="984" WORD="order (v.)" EXPLANATION="to ask for food in a restaurant" EXAMPLE="What should we order? I've heard that the seafood in this restaurant is excellent." WAVE="ORDER__V" />
<WORD ID="985" WORD="ordinary (adj.)" EXPLANATION="the usual type" EXAMPLE="This is no ordinary movie. It is very special and took three years to make." WAVE="ORDINARY" />
<WORD ID="986" WORD="oregano (n.)" EXPLANATION="dried leaves of a plant used in cooking" EXAMPLE=" Oregano adds an Italian flavour to pasta sauce and salads." WAVE="OREGANO_" />
<WORD ID="987" WORD="organise (v.)" EXPLANATION="to arrange according to a system" EXAMPLE="If we don't organise this office, we'll never find anything! Let's start with these files and letters." WAVE="ORGANISE" />
<WORD ID="988" WORD="oriental (adj.)" EXPLANATION="eastern" EXAMPLE="He loves oriental food. He always eats in Chinese, Thai and Indian restaurants." WAVE="ORIENTAL" />
<WORD ID="989" WORD="original (adj.)" EXPLANATION=" the first known, newly created, not copied" EXAMPLE="This is an original painting, not a copy." WAVE="ORIGINAL" />
<WORD ID="990" WORD="orphan (n.)" EXPLANATION="without parents" EXAMPLE="John is an orphan. His parents are dead." WAVE="ORPHAN__" />
<WORD ID="991" WORD="other (adj.)" EXPLANATION="different" EXAMPLE="People tell me carpets are much cheaper in Istanbul than in other cities." WAVE="OTHER__A" />
<WORD ID="992" WORD="outdoor (adj.)" EXPLANATION="outside a house or building" EXAMPLE="I want to visit the outdoor flower market, but I hope it doesn't rain." WAVE="OUTDOOR_" />
<WORD ID="993" WORD="outrun (v.)" EXPLANATION="to run faster than something else" EXAMPLE="Greyhounds are the fastest dogs on earth. They can even outrun rabbits" WAVE="OUTRUN__" />
<WORD ID="994" WORD="outside (adv.)" EXPLANATION="outdoors, in the open air" EXAMPLE="Tea helps to cool the body down in summer when it is warm outside." WAVE="OUTSIDE_" />
<WORD ID="995" WORD="over (prep.)" EXPLANATION="onto, above" EXAMPLE="When the sauce is ready, pour it over cooked spaghetti and mix it in." WAVE="OVER" />
<WORD ID="996" WORD="overcook (v.)" EXPLANATION="to cook for too long" EXAMPLE="Be careful not to overcook the eggs. I like them soft." WAVE="OVERCOOK" />
<WORD ID="997" WORD="owner (n.)" EXPLANATION="a person to whom something belongs" EXAMPLE="Where is the owner of this car? It's parked in my space." WAVE="OWNER__N" />
