Definitions
1.verbTo quickly lower the head or body in order to prevent it from being struck by something.
2.verbTo quickly lower (the head) in order to prevent it from being struck by something.
3.verbTo lower (something) into water; to thrust or plunge under liquid and suddenly withdraw.
4.verbTo go under the surface of water and immediately reappear; to plunge one's head into water or other liquid.
5.verbTo bow.
6.verbTo evade doing something.
7.verbTo lower the volume of (a sound) so that other sounds in the mix can be heard more clearly.
8.verbTo enter a place for a short moment."I'm just going to duck into the loo for a minute, can you hold my bag?"