"hummer" in the noun sense
1. hummer
a singer who produces a tune without opening the lips or forming words
2. fastball, heater, smoke, hummer, bullet
baseball) a pitch thrown with maximum velocity
"he swung late on the fastball"
"he showed batters nothing but smoke"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License