n. 1. One of the segments of leather in the heel of a shoe. [ 1913 Webster ]

2. A small portion of liquor left in a glass after drinking. “Bumpers around and no heeltaps.” Sheridan. [ 1913 Webster ]

v. t. [ imp. & p. p. Heeltapped p. pr. & vb. n. Heeltapping. ] To add a piece of leather to the heel of (a shoe, boot, etc.) [ 1913 Webster ]