The Collaborative International Dictionary of English v.0.48:

Puppy \Pup"py\, n.; pl. Puppies. [F. poup['e]e doll, puppet.
   See Puppet, and cf. Pup, n.]
   1. (Zool.) The young of a canine animal, esp. of the common
      dog; a whelp.
      [1913 Webster]

   2. A name of contemptuous reproach for a conceited and
      impertinent person.
      [1913 Webster]

            I found my place taken by an ill-bred, awkward puppy
            with a money bag under each arm.      --Addison.
      [1913 Webster]