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.
2.
any similar missile or explosive device used as a weapon, to disperse crowds, etc.: a time bomb; a smoke bomb.
3.
Also called volcanic bomb.Geology. a rough spherical or ellipsoidal mass of lava, ejected from a volcano and hardened while falling.
Computers. a spectacular program or system failure.
11.
Slang. a powerful automobile or other vehicle.
–verb (used with object)
12.
to hurl bombs at or drop bombs upon, as from an airplane; bombard: The enemy planes bombed the city.
13.
to explode by means of a bomb or explosive.
14.
Computers. to deliberately cause (a computer system) to fail with a program written for the purpose.
–verb (used without object)
15.
to hurl or drop bombs.
16.
to explode a bomb or bombs.
17.
Slang. to be or make a complete failure, esp. to fail to please or gain an audience; flop (sometimes fol. by out): His last play bombed on Broadway. The business bombed out with a $25,000 debt.
18.
(of a computer program or system) to fail spectacularly.
19.
Informal. to move very quickly: They came bombing through here on their motorcycles at 2 a.m.
Origin: 1580–90; 1960–65 for def. 17;earlier bom(b)e < Sp bomba (de fuego) ball (of fire), akin to bombo drum < L bombus a booming sound < Gk bómbos
[bomd] 
