The Collaborative International Dictionary of English v.0.48:
Poppy \Pop"py\, Poppyhead \Pop"py*head`\, n. [F. poup['e]e doll,
puppet. See Puppet.] (Arch.)
A raised ornament frequently having the form of a final. It
is generally used on the tops of the upright ends or elbows
which terminate seats, etc., in Gothic churches.
WordNet (r) 3.0 (2006):
n 1: annual or biennial or perennial herbs having showy flowers