Green’s Dictionary of Slang

thatch n.

1. (also thatching, top thatch) the human hair.

[UK]Dekker Gul’s Horne-Booke 15: Nature therefore has plaid the Tyler, and giuen it a most curious couering, or (to speake more properly) she has thatched it all ouer, and that Thatching is haire.
‘A Modern Mill’ in Egan Anecdotes of the Turf, the Chase etc. (1827) 220: Sam [...] twisted his mauleys ’mongst Goliath’s thatch.
[Aus]Bell’s Life in Sydney 6 Sept. 4/3: Sambo shortly after displayed his woolly nob, having, on this occasion, taken care to strip his thatch of all superfluous locks.
[UK]Fife Herald 31 Mar. 2/2: An extremely narrow and low brow — with the eye brows meeting the ‘thatch’ on his head.
[Aus]Bulletin (Sydney) 2 Aug. 17/3: Stanley is blessed with a head of white hair. His own reason for the premature paleness of his tonsorial thatch is the suffering and hardship he endured in the great forest.
[UK] ‘’Arry on Harry’ in Punch 24 Aug. 90/1: Do keep yer ’air on, old pal, if you’ve got any thatch.
[Aus]Bulletin (Sydney) 6 Oct. 12/3: Those interested in hair-culture point to the top-thatch of two local handsome brunettes as samples of the system, old and new respectively.
[US]C.L. Cullen More Ex-Tank Tales 22: To convince myself that he wasn’t twisted beneath his thatch.
[UK]‘Doss Chiderdoss’ ‘They Begged To Differ’ Sporting Times 15 Apr. 1/3: What looked like an easy catch, / A ‘skyer,’ right above his thatch, / Descended on his ‘sniffer.’.
[US]Spokane Press (WA) 22 Sept. 7/3: One old bowser [...] swung on my roof with her mush and put my thatch to the cleaners.
[UK]E. Pugh City Of The World 269: While the sniders themselves walk about as big as a sucking millionaire and clobbered up to the thatch in iky rig.
[UK]B. Bennett ‘Doctor Goosegrease’ in Billy Bennett’s Third Budget 16: It’s good for the thatch, if you’ve got a bald patch.
[UK]N. Mitford Pigeon Pie 88: The old gentleman [...] always seemed to have a wonderful thatch.
[US]R. Chandler Long Good-Bye 76: The old bar waiter came drifting by [...] I shook my head and he bobbed his white thatch.
[Ire]H. Leonard A Life (1981) Act I: An employer knows he can trust a man with snow on his thatch, a man that’ll do a day’s work and not go chasing bits of stuff.
[UK]J. Fagan Panopticon (2013) 241: ‘What did she look like?’ ‘Nice thatch’.

2. a woman’s pubic hair.

[UK] ‘The Thatched Cot’ in Lummy Chaunter 94: Yet I fear’d to avail myself of the delight, / To brush from its thatch the thick hanging dew.
[UK]‘Walter’ My Secret Life (1966) IX 1824: My fingers [...] lingered high up on her thighs, made acquaintance with the hairy thatch.
[US] in E. Cray Erotic Muse (1992) 69: I fired off my cannon into her thatch of hair.
[US] in G. Legman Limerick (1953) 35: His ballocks grew rough / And wrecked his wife’s muff, / And scratched up her thatch in the scrimmage.
[US]Maledicta IV:2 (Winter) 187: To [...] return to the quim whiskers, common terms include [...] the nostalgic (thatch).

3. a wig.

[UK]Bell’s Life in London 22 Apr. 4/4: Mason first flung his ‘thatch’ into the ring, and was loudly cheered.

In compounds

thatch-teaser (n.)

(Aus.) a hairdresser.

[Aus]Sun. Times (Perth) 16 Sept. 1/1: A Murray-street hairdresser has not done his dash in the Lothario line [...] the twice-married thatch-teaser kids himself he is off for a t’otherside trip.

In phrases

get one’s thatch off (v.)

(Aus.) to lose one’s temper.

[Aus]Sun. Times (Perth) 23 Apr. 4/7: Premier Daglish got his thatch off at Kalgoorlie because the ‘Sunday Times’ has been exposing certain jobs.