A brand of sport utility vehicles sold by General Motors, and by extension, any large similar vehicle.

(military, slang) The HMMWV or Humvee, a US Army vehicle which replaced the Jeep.

One who hums.

(informal) A Humvee.

A type of vehicle resembling a jeep but bulkier.

(informal) A hummingbird.

(informal) A humdinger; something or someone exceptional or outstanding of their type.

A machine that runs particularly well and smoothly.

(slang) A very energetic or lively person; a powerful lively thing.

Something that generates a lot of attention, talk, and excitement.

(baseball) A fastball.

(slang) Fellatio, especially when the person performing the act vibrates their mouth by humming.

Someone who upsets or irritates others; a trouble-maker or controversial figure.

A tantrum or fuss.

(slang) An arrest on false pretexts.