I. ˈklək verb
Etymology: imitative
Date: 15th century
intransitive verb
1. : to make a cluck
2. : to make a clicking sound with the tongue
3. : to express interest or concern
critics cluck ed over the new developments
transitive verb
1. : to call with a cluck
2. : to express with interest or concern
II. noun
Date: 1703
1. : the characteristic sound made by a hen especially in calling her chicks
2. : a stupid or naive person
a dumb cluck