Monkey

1. v. t. & i. To act or treat as a monkey does; to ape; to act in a grotesque or meddlesome manner.
2. n. In the most general sense, any one of the Quadrumana, including apes, baboons, and lemurs.
3. n. Any species of Quadrumana, except the lemurs.
4. n. Any one of numerous species of Quadrumana (esp. such as have a long tail and prehensile feet) exclusive of apes and baboons.
5. n. A term of disapproval, ridicule, or contempt, as for a mischievous child.
6. n. The weight or hammer of a pile driver, that is, a very heavy mass of iron, which, being raised on high, falls on the head of the pile, and drives it into the earth; the falling weight of a drop hammer used in forging.
7. n. A small trading vessel of the sixteenth century.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.