'Downy woodpecker' definitions:

Definition of 'downy woodpecker'

(from WordNet)
noun
Small North American woodpecker with black and white plumage and a small bill

Definition of 'Downy woodpecker'

From: GCIDE
  • Downy woodpecker \Down"y wood"peck*er\ (-[y^]), n. (Zool.) A small black and white ladder-backed woodpecker ({Picoides pubescens}) of Central and Eastern U. S. and Canada. It strongly resembles the hairy woodpecker, but is smaller (6 1/2"), compared with about 9-1/2" for the hairy. It is common in suburban backyards. [PJC]