2. [syn: fastball, heater, smoke, hummer, bullet]
The Collaborative International Dictionary of English v.0.48:
Hummer \Hum"mer\, n.
1. One who, or that which, hums; one who applauds by humming.
2. (Zool.) A humming bird.
WordNet (r) 3.0 (2006):
n 1: a singer who produces a tune without opening the lips or
2: (baseball) a pitch thrown with maximum velocity; "he swung
late on the fastball"; "he showed batters nothing but smoke"
[syn: fastball, heater, smoke, hummer, bullet]