Green’s Dictionary of Slang

(US) a Humvee military vehicle, also produced for civilian use.

1999		W. Gibson All Tomorrow’s Parties 118: She edged the van past an old Hummer, ex-military.
2001		S. King Dreamcatcher 575: Hummers are better in mud than snow.
2004		C. Hiaasen Skinny Dip 211: I told him [...] got me the Hummer for my birthday.
2010		C. Hiaasen Star Island (2011) 39: One of Michael Jackson’s security goons drove a full sized Hummer over both of Teddy Loo’s feet.
2012		D. Whish-Wilson ‘In Savage Freedom’ in Crime Factory: Hard Labour [ebook] A black hummer limo enters from the right.
2012		Chief Keef ‘Halleujah’ 🎵 Bentley coupes and hummer trucks and raris and shit.
2021		T. Pluck Boy from County Hell 270: [T]wo Hummers painted sand camo and olive drab.