noun
1.
a forcible or enforced contact between two or more things
a crater formed by the impact of a meteorite
Synonyms: appulse, blow, bump, clash, collision, concussion, crash, impingement, jar, jolt, jounce, percussion, shock, smash, wallop
Related Word: brunt; buffet, hit, pound, punch, rap, slap, smiting, strike, stroke; bounce, quake, quiver, rock, shake, tremble, tremor; encounter, meeting
2.
Synonyms: effect 3, imprint, influence, mark, repercussion