duckˈer noun

1. Someone who ducks
2. A diving bird

duckˈing noun

duck hook noun (golf)

A badly mishit shot that veers sharply and low to the left (for a right-handed player) as soon as it is hit

duckˈing-pond noun

duckˈing-stool noun (historical)

A stool or chair in which adjudged offenders were tied and ducked in the water

duck and dive

To use one's wits to avoid or accomplish something

duck out of

To shirk, avoid (responsibilities, etc)