Definition of "nammus"

None of us know'd then—though the grabbing at Nan Turner's came off that very night—as Polly was the cause o' that 'ere, till it vos blown here at the Gate by some of the coves. Vell, she nammused, as you may guess, but fust poor old Madge Rhodes got a chive in her breather from Black Gil.

1841, Henry Downes Miles, chapter XXXIX, in Dick Turpin‎, 4th edition, London: William Mark Clark, published 1845, page 267