Definitions
1.nounThe sound made by a hen, especially when brooding, or calling her chicks.
2.nounAny sound similar to this.
3.nounA kind of tongue click used to urge on a horse.
4.verbTo make such a sound.
5.verbTo cause (the tongue) to make a clicking sound."My mother clucked her tongue in disapproval."
6.verbTo call together, or call to follow, as a hen does her chickens.
7.verbTo suffer withdrawal from heroin.