¹ bang verb

• to cause or allow (something, such as part of your body) to hit something in a way that makes a loud noise
• to hit (something or someone) in a way that makes a loud noise —usually + into or against
• to use your hand or a tool to beat or hit (something) in a way that makes a loud noise —+ on

² bang noun

• a sudden loud noise
• —used as an interjection to imitate a loud noise (such as the sound of a gun being fired)
• a hard hit or blow

³ bang adverb

• exactly or directly