Duck, v. t. [imp. & p. p.Ducked (?); p. pr. & vb. n.Ducking.] [OE. duken, douken, to dive; akin to D. duiken, OHG. t�hhan, MHG. tucken, tücken, t�chen, G. tuchen. Cf. 5th Duck.] 1. To thrust or plunge under water or other liquid and suddenly withdraw.
Adams, after ducking the squire twice or thrice, leaped out of the tub. Fielding.
2. To plunge the head of under water, immediately withdrawing it; as, duck the boy.
3. To bow; to bob down; to move quickly with a downward motion. “ Will duck his head aside.” Swift.