| Oman |
a country on the Indian Ocean northeast of Yemen and east of Saudi Arabia. The capital of Oman is Muscat. |
| omelet |
a food made from beaten eggs that are cooked into a single sheet and often folded over a filling of vegetables, meat, or cheese. |
| omen |
something that is believed to be a sign of future good or evil. |
| ominous |
giving a sign of future evil or trouble. |
| omit |
to leave out; not include. |
| omnivore |
an animal that lives on a diet of both plant and animal food. |
| omnivorous |
living on a diet of both plant and animal food. |
| on |
above and supported by. [20 definitions] |
| on account of |
because of. |
| on a dime |
(informal) with great quickness or accuracy. |
| on and on |
for too long a time. |
| on an even keel |
in balance or stable. |
| once |
at one time in the past; formerly. [4 definitions] |
| oncoming |
coming toward or near; approaching. |
| on deck |
next in line to bat in a baseball game. |
| one |
being a single thing or person. [8 definitions] |
| on edge |
nervous or anxious; full of worry. |
| oneself |
a person's own self (used to show that an action is done to the same person who does that action). |
| one-sided |
giving only one side or position. [2 definitions] |
| one-way |
moving or allowing to move in a single direction. |
| on fire |
burning; in flames. |