Green’s Dictionary of Slang

chapped adj.

thirsty.

1674		Head Canting Academy (2nd edn).
1725		New Canting Dict.
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict.
1754		Scoundrel’s Dict. 17: Dry or thirsty – Chapt.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue n.p.: Chapt, dry or thirsty.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1859		Matsell Vocabulum.