American Dictionary of the English Language

EXPLOIT', noun

1. A deed or act; more especially, a heroic act; a deed of renown; a great or noble achievement; as the exploits of Alexander, of Caesar, of Washington. [Exploiture, in a like sense, is Not in use.]

2. In a ludicrous sense, a great act of wickedness.

EXPLOIT', verb transitive To achieve. [Not in use.]