| Word | Definitions | Synonyms |
|---|---|---|
| oka | (noun) South American wood sorrel cultivated for its edible tubers | Synonyms: oca, Oxalis crenata, Oxalis tuberosa |
| (noun) a Turkish unit of weight equal to about 2.75 pounds | - | |
| (noun) a Turkish liquid unit equal to 1.3 pints | - | |
| okapi | (noun) similar to the giraffe but smaller with much shorter neck and stripe on the legs | Synonyms: Okapia johnstoni |
| okay | (noun) an endorsement | Synonyms: O.K., OK, okeh, okey |