himantopus stilt

NOUN
16 LETTERS · STARTS WITH H

himantopus stilt is a valid 16-letter word worth 22 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
H4I1M3A1N1T1O1P3U1S1S1T1I1L1T1
4 + 1 + 3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 =22 PTS
DOUBLE WORD → 44TRIPLE WORD → 66
MEANING

What does himantopus stilt mean?