ducker

To lower quickly, especially so as to avoid something: ducked his head as the ball came toward him.

To evade; dodge: duck responsibility; ducked the reporter's question.

To push suddenly under water. See Synonyms at dip.

Games To deliberately play a card that is lower than (an opponent's card).

To lower the head or body.

To move swiftly, especially so as to escape being seen: ducked behind a bush.

To submerge the head or body briefly in water.

To evade a responsibility or obligation. Often used with out: duck out on one's family.

Games To lose a trick by deliberately playing lower than one's opponent.

A quick lowering of the head or body.

A plunge into water.