Meaning

• To quickly lower the head or body in order to prevent it from being struck by something.

• To quickly lower (the head) in order to prevent it from being struck by something.

• To lower (something) into water; to thrust or plunge under liquid and suddenly withdraw.

• To go under the surface of water and immediately reappear; to plunge one's head into water or other liquid.

• To bow.

• To evade doing something.

• To lower the volume of (a sound) so that other sounds in the mix can be heard more clearly.

• To enter a place for a short moment.

  "I'm just going to duck into the loo for a minute, can you hold my bag?"