heeltap

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A layer of leather or wood added to raise the heel of a shoe; a lift.
2. n. A small amount of liquor remaining in a container or drinking vessel.

Century Dictionary and Cyclopedia

1. n. A small piece of leather several of which together form the heel of a shoe; a lift. See heel
2. n. The small portion of wine or liquor left in a glass when the main portion has been drunk.
3. To add a piece of leather to the heel of, as a shoe or boot.

Wiktionary

1. n. A piece or wedge that raises the heel of a shoe.
2. n. dated A small amount of (especially alcoholic) drink remaining at the bottom of a glass.
3. v. transitive To add a piece of leather to the heel of (a shoe, boot, etc.).

GNU Webster's 1913

1. n. One of the segments of leather in the heel of a shoe.
2. n. A small portion of liquor left in a glass after drinking.
3. v. To add a piece of leather to the heel of (a shoe, boot, etc.)