AUTEM-MORT,
a marry'd Woman; also one who travels up and down the Country, with one Child in their Arms, another on her Back, and often leading a third in her Hand.
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Entry taken from 1736 Canting Dictionary, by Nathan Bailey.
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Autem Mort in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).