(onomatopoeia) Noisy, raucous. / Violent, forceful / Impressive, exciting.

(onomatopoeia) Noisy activity.

Shot or hit with a noise

(astrophysics) An explosion giving rise to a universe. / A large implementation of a system rather than phased or gradual delivery

(Britain) Used other than figuratively or idiomatically: bang (adverb), to rights. / (Britain, idiomatic) Red-handed.

(rare, Britain, idiomatic) To have sufficient, indisputable evidence that a person's actions are generally perceived to be wrong; to catch red-handed.

(astronomy) The cosmic event that marks the beginning of time and the rapid expansion of space for the visible universe. The evolution of the universe since that beginning point is described by the Big Bang Theory.

(idiomatic, often hyphenated) Good, superior, excellent.

(transitive, informal) To damage. / (transitive, informal) To put someone in prison, or into their individual cell.

(vulgar) An orgy, especially a sexual one. / (US, slang) A gang fight. / (US, slang) Protecting gang turf, especially when dealing drugs or other black market objects. / (informal, dated) A gang rape.