Cluck/klʌk/ Definition 1 of 3Pro Tip 1/3Animal Sounds Use 'cluck' when describing sounds specific to chickens, especially hens. You can hear the hen's cluck at dawn. Pro Tip 2/3Onomatopoeia 'Cluck' is an example of onomatopoeia, where the word imitates the sound it represents. Mimic the cluck when writing animal sounds in stories. Pro Tip 3/3Maternal Instinct Hens cluck to communicate with their chicks, often seen as a nurturing behavior. The mother hen clucked, gathering her chicks.