1) Audible dance step 2) Clicker, of a sort 3) Last bit in the bottle 4) Lift in the back of a shoe 5) Liquor leftover 6) Shoe lift 7) Shoe raiser 1) Lift 
• (n.) A small portion of liquor left in a glass after drinking. • (v. t.) To add a piece of leather to the heel of (a shoe, boot, etc.) • (n.) One of the segments of leather in the heel of a shoe.
Heel'tap` noun 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 .' Sheridan. Heel'tap` transitive verb [ imperfect & past participle Heeltapped ; present participle & verbal noun Heeltapping .] To add a piece of leather to the heel of (a shoe, boot, etc.) 
Heeltap is slang for a glass with just a little wine left in the bottom.