Green’s Dictionary of Slang

golgotha n.

a hat.

1840		London Mag. Feb. 9/2: But one ‘tile’ [...] could be found to fit him [...] It was the very beau ideal of a fitting ‘Golgotha’ for a Puritan preacher.
1860		Hotten Dict. of Modern Sl. etc. (2nd edn).
1873		Sl. Dict.
1879		‘Sub-Umbra, or Sport among the She-noodles’ in Pearl 2 Aug. 1: I gently removed her hat, and threw aside my own golgotha.
1914		Dundee Courier 3 Mar. 8/1: The Hat in Slang [...] A by no means exhaustive list would include ‘tile,’ ‘golgotha,’ ‘canister,’ ‘castor,’ ‘chimney,’ ‘colleger,’ ‘cock and pinch,’ ‘cowshooters,’ ‘david,’ ‘digger’s delight,’ ‘fantail,’ ‘gomer,’ ‘goss,’ ‘moab,’ ‘molocher,’ ‘muffin cap,’ ‘mushroom,’ ‘pill box,’ ‘stove pipe,’ ‘thatch,’ ‘truck,’ and ‘wee jee’.