1) Fastball 1) GM brand discontinued in 2010 2) German for lobster 3) Humdinger 4) Jeep alternative 5) One at a loss for words 6) Sega arcade game 7) Singer 8) Vocaliser 9) Vocalist 10) Vocalizer 
Hummer was a brand of trucks and SUVs, first marketed in 1992 when AM General began selling a civilian version of the M998 Humvee. In 1998, General Motors (GM) purchased the brand name and marketed three vehicles: the original Hummer H1, based on the Humvee; and the H2 and H3 models that were based on smaller, civilian-market GM platforms. By 2008...[video game] Hummer is an arcade racing game released by Sega in 2009. The game runs on the Sega Lindbergh platform. There are 2 game modes: Time attack mode and Race mode. In the Race mode, players driving Hummer to race against other opponents. It is possible for up to 8 people to race at the same time. Boosts can be used to speed up duri...
• (n.) A humming bird. • (n.) One who, or that which, hums; one who applauds by humming.
German for Lobster.
Hum'mer noun 1. One who, or that which, hums; one who applauds by humming. Ainsworth. 2. (Zoology) A humming bird. 
Hummer is Black-American slang for a small error; also getting something free
[n] - a singer who produces a tune without opening the lips or forming words
a person or thing that hums. · humdinger. · a hummingbird.