| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| oad | noun | See Woad. |
| oaf | noun | Originally, an elf’s child; a changeling left by fairies or goblins; hence, a deformed or foolish child; a simpleton; an idiot. |
| oak | noun | Any tree or shrub of the genus Quercus. The oaks have alternate leaves, often variously lobed, and staminate flowers in catkins. The fruit is a smooth nut, called an acorn, which is more or less inclosed in a scaly involucre called the cup or cupule. There are now recognized about three hundred species, of which nearly fifty occur in the United States, the rest in Europe, Asia, and the other parts of North America, a very few barely reaching the northern parts of South America and Africa. Many of the oaks form forest trees of grand proportions and live many centuries. The wood is usually hard and tough, and provided with conspicuous medullary rays, forming the silver grain., The strong wood or timber of the oak. |
| oar | n | An implement for impelling a boat, being a slender piece of timber, usually ash or spruce, with a grip or handle at one end and a broad blade at the other. The part which rests in the rowlock is called the loom., An oarsman; a rower; as, he is a good oar., An oarlike swimming organ of various invertebrates., To row. |
| oat | noun | A well-known cereal grass (Avena sativa), and its edible grain; — commonly used in the plural and in a collective sense., A musical pipe made of oat straw. |