Green’s Dictionary of Slang

1. a pimp; thus victualling-house, a brothel [innkeepers who doubled as pimps].

c.1597		Shakespeare Henry IV Pt 2 II iv: fal.: Marry, there’s another indictment on thee, for suffering flesh to be eaten in thy house, contrary to the law [...] quick.: All victuallers do so: what’s a joint of mutton or two in a whole Lent?
c.1625		Webster Cure for a Cuckold IV i: This informer comes into Turnbull Street, to a victualling house, and there falls in league with a wench.

2. (prizefighting) a blow to the stomach, or victualling department n.

1826

Pierce Egan’s Life in London 10 Sept. 677/2: Reed’s victualling-office was disarranged in a twinkling [and he] fell forwards upon the ground. [...] Sharp's friends were now uproarious in the extreme. ‘Hallo! what’s a clock ? That’s the time of day! Go it, Bishop, another victualler will do the trick!’.