Green’s Dictionary of Slang

a black eye.

1827		‘The Mill’ British Minstrelsy 110: There’s a wap on his tater-trap – he’s made his box o’ dominoes chatter. [...] Baker shows first claret and a graper – he’s taking measure of his eyes for a suit of mourning.
1834		‘The Mill’ Museum of Mirth 45/1: [as 1827].