Duck

1. Any bird of the subfamily Anatinae, family Anatidae.
2. A sudden inclination of the bead or dropping of the person, resembling the motion of a duck in water.
3. To bow; to bob down; to move quickly with a downward motion.
4. The light clothes worn by sailors in hot climates.
5. A pet; a darling.
6. 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.
7. To plunge the head of under water, immediately withdrawing it; as, duck the boy.
8. To thrust or plunge under water or other liquid and suddenly withdraw.
9. To go under the surface of water and immediately reappear; to dive; to plunge the head in water or other liquid; to dip.
10. To drop the head or person suddenly; to bow.