Puppy

Part of speech: noun (n.)

1. The young of a canine animal, esp. of the common dog; a whelp.

2. A name of contemptuous reproach for a conceited and impertinent person. I found my place taken by an ill-bred, awkward puppy with a money bag under each arm. Addison.

Part of speech: verb (v.)

To bring forth whelps; to pup.