Where does “ponnen” come from?

ponnen (Middle English) comes from Old English pūnian, from Proto-Germanic pūnōną — to break to pieces, pulverise.

ponnen (Middle English): Alternative form of pounen

Definitions

Step	Language	Word	Meaning
1	Old English	pūnian	to pound, beat, bray, bruise, crush; to pound,...
2	Proto-Germanic	pūnōną	to break to pieces, pulverise

ponnen — Etymology, Origin & Word History | Etymology Explorer