Where does “pinchen” come from?

pinchen (Middle English) comes from Old French pincer, from Vulgar Latin pincio, from Latin punctiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis- — small stone, pebble; gravel, rubble.

Ancestry of “pinchen”, step by step

pinchen traces back through two separate lines of ancestry.

via Old French pincer

Step	Language	Word	Meaning
1	Old French	pincer	to pinch
2	Vulgar Latin	pincio	to puncture, pinch; I puncture, prick, pierce,...
3	Latin	punctiō	puncture, pricking
4	Latin	-tiō	tion, -ation, -ing
5	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
6	Latin	dissertus	arranged, disposed; explained
7	Latin	disserere	second-person singular future passive indicative...
8	Latin	dis-	asunder, apart, in two; reversal, removal;...
9	Latin	calceus	shoe
10	Latin	calx	limestone; chalk; the finish line
11	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

via Old French pinchier

Step	Language	Word	Meaning
1	Old French	pinchier	—

Words derived from “pinchen”

Every word from Ancient Greek χάλιξ →Every word from Latin -tiō →Every word from Latin dis- →