Green’s Dictionary of Slang

never satisfied and wanting everything; gluttonous and aggressively greedy, esp. for food.

1828		Devizes and Wilts Gaz. 8 May 4/1: Here some curst old Popish crow / Pops his long and lickerish beak in.
1838		Leicester Chron. 25 Aug. 1/2: The fishermen think they [i.e. seals] come up the river in pursuit of salmon, for which [...] they have a ‘lickerish tooth’.
1894		A. Morrison Tales of Mean Streets (1983) 109: ‘All ye wants provided for, free an’ liberal.’ Some of the group gave a lickerish look across the bar.