Webster's English Dictionary

Enter the word to look up:

ulna

ul.na \'*l-n*\ \'*l-.ne-, -.ni-\ \-.nad\ \-n*r\ n or ul.nae or ulnas [NL, 
   fr. L, elbow - more at ELL] pl  : the inner of the two bones of the forearm 
   or corresponding part of the f orelimb of vertebrates above fishes - ul.nad 
   av