- bullet, slug - a projectile that is fired from a gun
--1 is a kind of projectile, missile
--1 is a part of cartridge
--1 has particulars:dumdum, dumdum bullet; full metal jacket; rifle ball; rubber bullet - bullet train, bullet - a high-speed passenger train
--2 is a kind of passenger train
- fastball, heater, smoke, hummer, bullet - (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"
--3 is a kind of pitch, delivery
--3 has particulars: slider