[1] : The Collaborative International Dictionary of English v.0.48

woodpecker \wood"peck`er\, n. zool.
   any one of numerous species of scansorial birds belonging to
   picus and many allied genera of the family picidae.
   1913 webster

   note: these birds have the tail feathers pointed and rigid at
         the tip to aid in climbing, and a strong chisellike
         bill with which they are able to drill holes in the
         bark and wood of trees in search of insect larvae upon
         which most of the species feed. a few species feed
         partly upon the sap of trees see sap sucker, under
         sap, others spend a portion of their time on the
         ground in search of ants and other insects.
         1913 webster the most common european species are the
         greater spotted woodpecker dendrocopus major, the
         lesser spotted woodpecker dendrocopus minor, and
         the green woodpecker, or yaffle see yaffle.
         1913 webster the best-known american species are the
         pileated woodpecker see under pileated, the
         ivory-billed woodpecker campephilus principalis,
         which is one of the largest known species, the
         red-headed woodpecker, or red-head melanerpes
         erythrocephalus, the red-bellied woodpecker
         melanerpes carolinus see chab, the superciliary
         woodpecker melanerpes superciliaris, the hairy
         woodpecker dryobates villosus, the downy woodpecker
         dryobates pubescens, the three-toed, woodpecker
         picoides americanus, the golden-winged woodpecker
         see flicker, and the sap suckers. see also
         carpintero.
         1913 webster

   woodpecker hornbill zool., a black and white asiatic
      hornbill buceros pica which resembles a woodpecker in
      color.
      1913 webster
see also:
picus picidae sap sucker sap dendrocopus major dendrocopus minor 
yaffle pileated campephilus principalis melanerpes erythrocephalus melanerpes carolinus 
chab melanerpes superciliaris dryobates villosus dryobates pubescens picoides americanus 
flicker carpintero woodpecker hornbill buceros pica 

[2] : WordNet (r) 2.0

woodpecker
     n : bird with strong claws and a stiff tail adapted for climbing
         and a hard chisel-like bill for boring into wood for
         insects syn: peckerwood, pecker
see also:
peckerwood pecker 

Woodpecker >> W Words
Woodpecker, definition of term: Woodpecker
woodpecker_pag1.html