| ovule |
a very small plant part that develops into a seed when fertilized. [2 definitions] |
| ovum |
the female reproductive cell in animals or plants; gamete. |
| ow |
ouch (used to express sudden or sharp pain). |
| owe |
to be obligated to repay. [4 definitions] |
| owing |
as yet unpaid; due. |
| owing to |
because of; due to; resulting from. |
| owl |
any of various nocturnal birds of prey that have large eyes set in the front of a large head, a strong hooked beak, and strong, sharp talons. |
| owlet |
a small or immature owl. |
| own |
belonging to oneself or itself alone. [6 definitions] |
| owner |
one who owns. |
| ownership |
the state or fact of being an owner. [2 definitions] |
| ox |
one of a breed of large domestic cattle commonly used as draft animals, esp. an adult, castrated male. [2 definitions] |
| oxalic acid |
a poisonous, colorless acid used as a cleansing agent, laundry bleach, and laboratory reagent. |
| oxblood |
a dull dark red color. |
| oxbow |
a U-shaped wooden collar that attaches a yoke to the neck of an ox. [2 definitions] |
| Oxbridge |
Oxford and Cambridge universities considered collectively as representing British upper-class intellectual life. [2 definitions] |
| oxen |
pl. of ox. |
| oxeye |
any of various composite flowers, such as the sunflower. |
| ox-eyed |
having large, round eyes. |
| oxeye daisy |
a composite plant of North America and Europe having a vivid yellow center with white petals extending from it. |
| OXFAM |
a British charity, originally named Oxford Famine Relief, engaged in relieving poverty and suffering worldwide and commonly associated with its thrift shops that sell donated goods. |