(n.) The act of impinging.

appulse attouchement brunt brush bulldozing bulling bump cannon carambole caress carom clash collision concussion contact contingence crack-up crash crump crunch encounter encroachment entrance entrenchment glance graze hammering impact impingence imposition incursion infiltration influx infringement injection inroad insinuation interference interjection interloping interposition interposure interruption intervention intrusion invasion irruption jar jolt kiss mauling meeting nudge obtrusion onslaught osculation percussion ramming rub shock sideswipe sledgehammering smash smash-up smashing taction tangency tentative contact thrusting touch touching trespass trespassing unlawful entry whomp