Booby

Part of speech: noun (n.)

1. A dunce; a stupid fellow.

2. A swimming bird (Sula fiber or S. sula) related to the common gannet, and found in the West Indies, nesting on the bare rocks. It is so called on account of its apparent stupidity. The name is also sometimes applied to other species of gannets; as, S. piscator, the red-footed booby.

3. A species of penguin of the antarctic seas.

Part of speech: adjective (a.)

Having the characteristics of a booby; stupid.