Duck

1. n. The light clothes worn by sailors in hot climates.
2. n. A pet; a darling.
3. n. A linen (or sometimes cotton) fabric, finer and lighter than canvas, — used for the lighter sails of vessels, the sacking of beds, and sometimes for men’s clothing.
4. v. t. To bow; to bob down; to move quickly with a downward motion.
5. v. i. To go under the surface of water and immediately reappear; to dive; to plunge the head in water or other liquid; to dip.
6. v. i. To drop the head or person suddenly; to bow.
7. v. t. Any bird of the subfamily Anatinae, family Anatidae.

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.