n.
Function: noun
Date: circa 1550
1 : a resounding blow
2 : a sudden loud noise ― often used interjectionally
3 a : a sudden striking effect b : a quick burst of energy <start off with a bang > c : THRILL <I get a bang out of all this ― W. H. Whyte>
– bang for the buck also bang for one's buck : value received from outlay or effort <investment is yielding less bang for the buck ― Fortune >