heel·tap /-ˌtæp/
  鞋跟上另加的皮;[杯底] 殘酒
  Heel·tap n.
  1. One of the segments of leather in the heel of a shoe.
  2. A small portion of liquor left in a glass after drinking. “Bumpers around and no heeltaps.”
  Heel·tap, 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.)
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