| overthrown |
past participle of "overthrow." |
| overtime |
time worked beyond the regular working hours in a day or week. [3 definitions] |
| overtook |
past tense of "overtake." |
| overture |
an opening move to begin something. [2 definitions] |
| overturn |
to cause to tip over; upset. [2 definitions] |
| overweight |
having too much weight; too heavy. |
| overwhelm |
to beat or defeat by greater force; destroy. [2 definitions] |
| overwork |
to cause to work too many hours; tire completely with work. [3 definitions] |
| owe |
to have to pay or repay; be in debt to. [2 definitions] |
| owl |
a bird with large eyes set in front of a large head, a strong, hooked beak, and strong, sharp claws. Owls are most active at night and hunt other animals for food. There are many different kinds of owls. |
| own |
belonging to oneself or itself alone. [4 definitions] |
| owner |
a person who owns. |
| ownership |
the state or fact of being an owner. [2 definitions] |
| ox |
one of a breed of large cattle used on farms to pull heavy loads. |
| oxbow |
a wooden collar in the shape of a U that goes around the neck of an ox. It is fastened to a yoke. |
| oxen |
plural of "ox." |
| oxeye daisy |
a daisy that has a bright yellow center with white petals around it. |
| oxford |
a sturdy, plain shoe that laces over the top of the foot. |
| oxide |
a compound that includes oxygen. |
| oxidize |
to combine with oxygen. [2 definitions] |
| oxygen |
a gas with no color or smell that is one of the chemical elements. Oxygen combines with hydrogen to make water. It also makes up about twenty percent of the earth's atmosphere. Most living things need oxygen. (symbol: O) |