impinge on

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WordNet Dictionary
	Definition:		[v]  hit against; come into sudden contact with; "The car hit a tree"; "He struck the table with his elbow"
	Synonyms:		collide with, hit, run into, strike
	Antonyms:		miss
	See Also:		bang, bottom, bottom out, broadside, bump, bump into, butt against, clash, collide, connect, jar against, knock, knock against, ping, rear-end, spang, spat, thud, touch