Source : Webster's Revised Unabridged Dictionary (1913)

Greenshank \Green"shank`\, n. (Zo["o]l.)
   A European sandpiper or snipe ({Totanus canescens}); --
   called also {greater plover}.

Source : WordNet®

greenshank
     n : large European sandpiper with greenish legs [syn: {Tringa
         nebularia}]