| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| oilbird | noun | See Guacharo. |
| oilseed | noun | Seed from which oil is expressed, as the castor bean; also, the plant yielding such seed. See Castor bean., A cruciferous herb (Camelina sativa)., The sesame. |
| oilskin | noun | Cloth made waterproof by oil. |
| ointing | p. pr & vb. noun | of Oint |