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Military. a projectile, formerly usually spherical, filled with a bursting charge and exploded by means of a fuze, by impact, or otherwise, now generally designed to be dropped from an aircraft.
any similar missile or explosive device used as a weapon, to disperse crowds, etc.:
a time bomb; a smoke bomb.
Also called volcan·ic bomb·. Geology. a rough spherical or ellipsoidal mass of lava, ejected from a volcano and hardened while falling.
weather bomb.
aerosol bomb.
Football. a long forward pass, especially one to a teammate who scores a touchdown.
Slang. an absolute failure; fiasco:
The play was a bomb and closed after two performances.
Synonyms: flop, dud, bust, washout.
Computers. a spectacular program failure or system failure.
Slang. the bomb, something or someone that is excellent or very impressive:
Her boyfriend is the bomb!
Chiefly British Slang. an overwhelming success:
The novel is selling like a bomb.
Jazz. a sudden, unexpected accent or rhythmic figure played by a drummer during a performance.
a lead or lead-lined container for transporting and storing radioactive materials.
the bomb.

atomic bomb.
nuclear weapons collectively.

Slang. a powerful automobile or other vehicle.
Slang. something unpleasant that is unexpected or shocking (often used in combination with the first letter of an offensive or unmentionable word, as in f-bomb; s-bomb; n-bomb): He’s always dropping the f-bomb.
Then came the bomb about the staff cuts.
Synonyms: bombshell, shocker, kicker, surprise, bolt from the blue.
Slang. something unauthorized or illegal that is executed in a stealthy manner, typically having an overwhelming or sensational effect (used in combination, as in mail bomb; graffiti bomb).
to hurl bombs at or drop bombs upon, as from an airplane; bombard:
The enemy planes bombed the city.
to explode by means of a bomb or explosive.
Computers. to deliberately cause (a computer system) to fail with a program written for the purpose.
to hurl or drop bombs.
to explode a bomb or bombs.
Slang. to be or make a complete failure, especially to fail to please or gain an audience (sometimes followed by out): His last play bombed on Broadway.
The business bombed out with a $25,000 debt.
Synonyms: fail, flop.
(of a computer program or system) to fail spectacularly.
Slang. to spray-paint graffiti over many surfaces in an area, working quickly and using simple forms and designs:
He made his reputation bombing on the east side of town.
Informal. to move very quickly:
They came bombing through here on their motorcycles at 2 a.m.
Historical Examples

Black Star’s Campaign Johnston McCulley
Grapes of wrath Boyd Cable
The Blot on the Kaiser’s ‘Scutcheon Newell Dwight Hillis
Astounding Stories of Super-Science, June, 1930 Various
The Velvet Glove Harry Harrison
Hunter Patrol Henry Beam Piper and John J. McGuire

verb
(adverb; transitive, usually passive) to make homeless by bombing: 24 families in this street have been bombed out
noun

a hollow projectile containing an explosive, incendiary, or other destructive substance, esp one carried by aircraft
(as modifier): bomb disposal, a bomb bay
(in combination): a bombload, bombproof

any container filled with explosive: a car bomb, a letter bomb
the bomb

a hydrogen or atomic bomb considered as the ultimate destructive weapon
(slang) something excellent: it’s the bomb

a round or pear-shaped mass of volcanic rock, solidified from molten lava that has been thrown into the air
(med) a container for radioactive material, applied therapeutically to any part of the body: a cobalt bomb
(Brit, slang) a large sum of money (esp in the phrase make a bomb)
(US & Canadian, slang) a disastrous failure: the new play was a total bomb
(Austral & NZ, slang) an old or dilapidated motorcar
(American football) a very long high pass
(in rugby union) another term for up-and-under
(Brit & NZ, informal) like a bomb, with great speed or success; very well (esp in the phrase go like a bomb)
verb
to attack with or as if with a bomb or bombs; drop bombs (on)
(intransitive; often foll by off, along, etc) (informal) to move or drive very quickly
(intransitive) (slang) to fail disastrously; be a flop: the new play bombed See also bomb out
n.
v.

A conspicuous and total failure; blast, flop (1950s+ Show business)
A car, esp a hot rod (1950s+ Hot rodders)
(also bomber) An especially big marijuana cigarette (1950s+ Narcotics)
Heroin (1950s+ Narcotics)
Something very good: teenagers come home from a movie and say it was a ”bomb,” yet insist on seeing it again and again (1990s+ Teenagers)

: The show bombed everywhere on the road/ I took the test, and bombed (1960s+ Show business)
To dovery well at or on: I really bombed the math test, aced it (1960s+ Students)
To go very fast; plunge: found the discarded relics ideal for bombing down the dirt slopes of Mt Tam (1960s+)
To paint graffiti on; tag: His favorite stylin’-and-bombin’ wall, tagged with the rebellious urban scrawl of graffiti artists (1980s+)

see: time bomb