Green’s Dictionary of Slang

staring quarter n.

an ox-cheek.

1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1895		Penrith Obs. 23 Dec. 5/4: As for flesh meat [...] the staring quarter of the daisy picker.