dial. In 7 tanck. [Echoic.] ‘A blow, a knock’ (E.D.D.).

1

1686.  Plot, Staffordsh., 30. The Operators in Iron … are all awakened with a little blow (or tanck) upon a pair of their tongues (which is the common means they use for that purpose).

2

[1904.  in Eng. Dial. Dict., from Yorksh. to Northampton and Worcestersh.]

3