—n.
1 a young cat.
2 a young ferret etc.
—v.intr. & tr. (of a cat etc.) give birth or give birth to.
Phrases and idioms:
have kittens Brit. colloq. be extremely upset, anxious, or nervous.
Etymology: ME kito(u)n, ketoun f. OF chitoun, chetoun dimin. of chat CAT
Useful english dictionary. 2012.