Heelspur

1 definition found

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

  Heelspur \Heel"spur`\, n. (Zool.)
     A slender bony or cartilaginous process developed from the
     heel bone of bats. It helps to support the wing membranes.
     See Illust. of {Cheiropter}.
     [1913 Webster]