Is “Cluck” a Scrabble word?
Yes
CLUCK
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Cluck
/klʌk/
noun
1.The sound made by a hen, especially when brooding, or calling her chicks.
2.Any sound similar to this.
3.A kind of tongue click used to urge on a horse.
verb
1.To make such a sound.
2.To cause (the tongue) to make a clicking sound.
“My mother clucked her tongue in disapproval.”
3.To call together, or call to follow, as a hen does her chickens.