impinge (v.)
1530s, "fasten or fix forcibly," from Latin impingere "drive into, strike against," from assimilated form of in- "into, in, on, upon" (from PIE root *en "in") + pangere "to fix, fasten" (from PIE root *pag- "to fasten"). Sense of "encroach, infringe" first recorded 1738. Related: Impinged; impinging; impingent.