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

meadowlark \meadowlark\, meadow lark \meadow lark\n. zool.,
   any species of sturnella, a genus of north american
   songbirds allied to the starlings. the common species
   sturnella magna has a yellow breast with a black
   crescent.

   syn: lark.
        1913 webster + wordnet 1.5 meadowsweet
see also:
sturnella sturnella magna 

[2] : WordNet (r) 2.0

meadowlark
     n : north american yellow-breasted songbirds syn: lark
see also:
lark 

Meadowlark >> M Words
Meadowlark, definition of term: Meadowlark
meadowlark_pag1.html