Definify.com
Webster 1913 Edition
Bang
Bang
(băng)
, Verb.
 T.
 [
imp. & p. p. 
Banged
; p. pr. & vb. n. 
Banging
.] [Icel. 
banga 
to hammer; akin to Dan. banke 
to beat, Sw. bångas 
to be impetuous, G. bengel 
club, clapper of a bell.] 1. 
To beat, as with a club or cudgel; to treat with violence; to handle roughly. 
The desperate tempest hath so 
banged 
the Turks. Shakespeare
2. 
To beat or thump, or to cause (something) to hit or strike against another object, in such a way as to make a loud noise; 
 as, to 
. bang 
a drum or a piano; to bang 
a door (against the doorpost or casing) in shutting itBang
,Verb.
 I.
 1. 
To make a loud noise, as if with a blow or succession of blows; 
 as, the window blind 
. banged 
and waked me; he was banging 
on the pianoBang
,Noun.
 1. 
A blow as with a club; a heavy blow. 
Many a stiff thwack, many a 
bang
. Hudibras.
2. 
The loud sound produced by a sudden concussion or explosion. 
 Bang
,Verb.
 T.
 To cut squarely across, as the tail of a horse, or the forelock of human beings; to cut (the hair). 
His hair 
 banged 
even with his eyebrows. The Century Mag.
Bang
,Noun.
 The short, front hair combed down over the forehead, esp. when cut squarely across; a false front of hair similarly worn; – usually used in the plural; 
as, her 
. bangs 
came down almost to her eyesHis hair cut in front like a young lady’s 
bang
. W. D. Howells.
Webster 1828 Edition
Bang
BANG
,Verb.
T.
  1.
  To beat, as with a club or cudgel; to thump; to cudgel. [A low word.]2.
  To beat or handle roughly; to treat with violence.BANG
,Noun.