kitten

Concise Oxford English Dictionary © 2008 Oxford University Press:
kitten/ˈkɪtn/

▶noun

• 1 a young cat.

  ■ the young of certain other animals, such as the rabbit and beaver.

• 2 used in names of a group of furry grey and white moths. [Genus Furcula.]

▶verb give birth to kittens.

– phrases
have kittens Brit. informal be extremely nervous or upset.

– origin ME kitoun, ketoun, from an Anglo-Norman Fr. var. of OFr. chitoun, dimin. of chat ‘cat’.