yerker--prophetes.ai

ˈyerker
[f. yerk v. + -er¹.]
a. One who yerks; a kicker; a flogger. b. A sudden and very severe blow’ (Jam. 1825).

1664 Gouldman Dict. i. (1669), A yerker out, sternax. 1678 Littleton Eng.-Lat. Dict., A yerker or whipster, plagosus Orbilius.

Oxford English Dictionary