cluck

Concise Oxford English Dictionary © 2008 Oxford University Press:
cluck/klʌk/

▶verb

• 1 (of a hen) make a short, low sound.

• 2 (cluck over/around) express fussy concern about.

▶noun

• 1 the short, low sound made by a hen.

• 2 N. Amer. informal a foolish person.

– derivatives
clucky adjective.

– origin C15: imitative.