lay a finger on

Betekenis (Engels)

1. (colloquial, idiomatic) To merely touch.
2. Used other than figuratively or idiomatically: see lay, a, finger, on: to finger

Sinonieme

set on

Etimologie (Engels)

Geërf van Middle English:

In summary

From Middle English fynger on (hem) to leyn (“touch (someone) with hostile intent”).