Green’s Dictionary of Slang

(UK Und.) a licence.

1612		Dekker ‘Canting Song’ O per se O O1: And Iybe well Ierkt, tick rome confeck, for backe by glymmar to mawnd.
1648		Dekker ‘Canters Dict.’ Eng. Villainies (9th edn) n.p.: Tick-Rome. A license.
1665		Head Eng. Rogue I 53: Tick-Rome, A License.
1674		Head Canting Academy (2nd edn) tick-rum A Licence.
c.1698		B.E. Dict. Canting Crew [as cit. 1674].
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1859		Matsell Vocabulum.