Gum-tickler, subs. (colloquial).—1. A drink. Specifically, drop or
short, or a dram. For synonyms, see Go.
1814. Quarterly Review, vol. X., p. 521. A gill, taken fasting, is
called a gum-tickler.
1864. Dickens, Our Mutual Friend, bk. IV., ch. iii. I prefer to
take it in the form of a gum-tickler.