Did you mean: catamite, catkin, cation, carmine, varmint?

catnip (n.)[catnip 词源字典]

1712, American English, from cat (n.) + nip, from Old English nepte "catnip," from Latin nepta, name of an aromatic herb. The older name is Middle English catmint (mid-13c.).[catnip etymology, catnip origin, 英语词源]