Source : Webster's Revised Unabridged Dictionary (1913)

Goldcrest \Gold"crest`\, n. (Zo["o]l.)
   The European golden-crested kinglet ({Regulus cristatus}, or
   {R. regulus}); -- called also {golden-crested wren}, and
   {golden wren}. The name is also sometimes applied to the
   American golden-crested kinglet. See {Kinglet}.