puppy

Concise Oxford English Dictionary © 2008 Oxford University Press:
puppy/ˈpʌpi/

▶noun (pl. puppies)

• 1 a young dog.

• 2 dated a conceited or arrogant young man.

• 3 informal, chiefly N. Amer. a person or thing of a specified kind: he's one sick puppy!

– derivatives
puppyhood noun,
puppyish adjective.

– origin C15: perh. from OFr. poupee ‘doll, toy’; cf. puppet, synonymous with dial. puppy (as in puppy-show ‘puppet show’).