Dated A small amount of (especially alcoholic) drink remaining at the bottom of a glass.
A heeltap! a heeltap! I never could bear it! So fill me a bumper, a bumper of Claret! Let the bottle pass freely, don't shirk it nor spare it, For a heeltap! a heeltap! I never could bear it.1815, Thomas Love Peacock, Headlong Hall:
"He's a good fellow, anyway, if he is a teetotaler!" "Drink his health!" "Give him a rouser, and no heeltaps!"1894, Mark Twain, “Chapter 11”, in Pudd'nhead Wilson:
1 more example
We had the heeltaps of bottles as well, so that we often drank too much—a good thing, for one seemed to work faster when partially drunk.1933 January 9, George Orwell [pseudonym; Eric Arthur Blair], Down and Out in Paris and London, London: Victor Gollancz […], →OCLC:
heeltap
verb
Etymology From heel + tap.
1
To add a piece of leather to the heel of (a shoe, boot, etc.).