n.
  - a young cat. 
▸the young of certain other animals, such as the rabbit and beaver.
 - used in names of a group of furry grey and white moths. 
[Genus Furcula.]
 
v.
 give birth to kittens.
 
  Phrase
  
    
      - have kittens
 Brit. informal be extremely nervous or upset. 
    
   
  Etymology
  ME kitoun, ketoun, from an Anglo-Norman Fr. var. of OFr. chitoun, dimin. of chat ‘cat’.