Green’s Dictionary of Slang

peckish adj.

also pecky
[peck n.1 (1); 20C+ use is SE]

hungry.

[UK]A. Smith Lives of Most Noted Highway-men, etc. I 155: Somewhat Peckish, that is, Hungry.
[UK] ‘Ainster Lassie’ in Bold (1979) 4: Then sun was hot, the burn was prime, so Bob jogged on his way, / When bye and bye he peckish got and faiked amang the hay.
[UK]A Treatise upon Publicans 26: One says to the other aside, I’m peckish, they asks the landlord what he had to eat?
[UK]Grose Classical Dict. of the Vulgar Tongue.
[Ire]J. O’Keeffe London Hermit (1794) 20: Bite. I wish we had dinner [...] I’m quite peckish. Poz. You peck’d all the way at the ham and cold fowls.
[US]Horry & Weems Life of General F. Marion (1816) 85: I feel both peckish and weary.
[UK]Lex. Balatronicum.
[UK] ‘I’m One of the New Police’ in C. Hindley James Catnach (1878) 207: ’Tis pleasant when I peckish feel / With Moll or Bess to stop.
[US]T. Haliburton Clockmaker II 12: I don’t care if I stop and breakfast with you, for I feel considerable peckish.
[UK]T. Hood ‘Friend in Need’ Works (1862) V 310: I’m a little peckish.
[Aus]Sydney Herald 26 Oct. 2/4: Mr Rennie gave an immense number of examples of similar slang [...] music, for ‘fun;’ a good hand, for ‘dextrous’ or ‘expert;’ peckish, for ‘hungry;’ sticks, for ‘household furniture;’ seedy, for ‘poor;’ spliced, for ‘married’.
[Aus][A. Harris] (con. 1820s) Settlers & Convicts 316: ‘Well, old fellow, I ’spose you're pretty peckish? Down with some more wood’.
Boy’s Own Mag. Sept. 267: Declaring ‘that they feel a little peckish,’ enter, and begin to demolish the mountain of beef, ham, mutton and vegetables.
[Aus]Bell’s Life in Sydney 25 Dec. 3/1: I shouted for her and myself, and then she gave me to understand that she felt very peckish. She invited me to stand a ‘feed’.
Golden Age (Queenbeyan, NSW) 28 Aug. 3/4: [H]e was [...] ‘that peckish he could snack off a dead horse, if nothing better presented itself;’ and as he went to seek something wherewith to satisfy his ‘peckishness’.
[UK]Leaves from Diary of Celebrated Burglar 78/2: Joe and I had eaten nothing since early the previous day and now I began to feel rather ‘peckish’.
[US] letter 7 Mar. in T. Hughes Gone To Texas (1884) 63: I had just laid in a nose-bag full of grub [...] and was peckish.
[UK]W.E. Henley ‘Culture in the Slums’ in Farmer Musa Pedestris (1896) 178: ‘For lo!’ she ses, ‘for lo! old pal,’ ses she, / ‘I’m blooming peckish, neither more nor less.’.
[Aus]H. Lawson ‘“Dossing Out” and “Camping”’ in Roderick (1972) 163: They were feeling ‘peckish’ [...] and wanted to see if they could get anything to eat.
[UK]Boy’s Own Paper 29 Dec. 198: I’m beginning to feel peckish.
[Ire]K.F. Purdon Dinny on the Doorstep 44: ‘I do believe the child is hungry!’ said Ruth [...] ‘A bit peckish. I daresay,’ replied Jack.
[UK]J.B. Priestley Good Companions 403: I’ve had nothing but a cup of tea and a bun since half-past twelve, and I’m peckish now.
[UK]M. Marshall Travels of Tramp-Royal 94: Then, feeling peckish, I struck off the road [...] and cooked a meal over a fire of driftwood.
[UK]S. Jackson An Indiscreet Guide to Soho 42: You get peckish wandering about Soho.
[UK]A. Buckeridge Thanks to Jennings (1988) 95: He must be getting a bit peckish by now.
[UK]E. Bond Saved Scene ii: Still pecky? [...] There’s a bit’a choclit left. ’Ere.
[UK]N. Armfelt Catching Up 204: I’m peckish myself.
[Aus]R.G. Barrett You Wouldn’t Be Dead for Quids (1989) 47: Feeling a bit peckish now he [...] threw a T-bone [...] under the griller.
[UK](con. 1950s–60s) in G. Tremlett Little Legs 29: You come back a bit peckish.
[Aus]R.G. Barrett Mud Crab Boogie (2013) [ebook] ‘Why don’t we order some food [...] I’m feeling a bit peckish’.
[UK](con. 1979–80) A. Wheatle Brixton Rock (2004) 27: I was feeling a bit peckish, so I thought I’d start dinner early.
[UK]M. Coles Bible in Cockney 70: Did you never read about David when he was peckish and needed something to eat?
[Aus]G. Disher Peace 34: ‘On his way home, he feels a bit peckish’.

In derivatives

peckishness (n.)

(Aus.) hunger.

Golden Age (Queenbeyan, NSW) 28 Aug. 3/4: [H]e was [...] ‘that peckish he could snack off a dead horse, if nothing better presented itself;’ and as he went to seek something wherewith to satisfy his ‘peckishness’.