Green’s Dictionary of Slang

a woman; one’s wife.

1857		‘Ducange Anglicus’ Vulgar Tongue 9: Cows and Kisses Miss, or the ladies.
1859		Matsell Vocabulum.
1864, 1867, 1870		Hotten Sl. Dict.
1881		Trumble Sl. Dict. (1890).
1883		N. Devon Jrnl 8 Feb. 7/2: [from The Echo] Come, cows and kisses, put the battle of the Nile on your Barnet Fair, and a rogue and villain in your sky-rocket.
1949		Monteleone Criminal Sl. (rev. edn).
1963		L.F. Freed Crime in S. Afr. 106: When he talks of his ‘cows and kisses’ he means his missus.
1989		J. Morton Lowspeak.