I got a lot of this when I taught in East LA. Best usage appears to be "blondy". It wasn't used much in a derogatory sense. I had to learn take it as harmless. He's tall, he's blond, he's a guero. Just descriptive.

Insisting that it be spelled with a diaeresis or trema is absurd. Sometimes "guerro".
by sargon1234 February 07, 2009
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It pretty much means "white person". It doesn't necessarily mean caucasion. If you're Mexican with light skin you may be nicknamed "Güero" for a boy, or "Güera" for a girl. If you have Spanish speaking friends and they say something like "hey güero" it means like "whats up white buddy". If there's some Spanish speaking person that doesn't like you or any white people and says something like "I hate that pinche güero" it may be used as a rude and possibly racist way. Güero isn't a racist or bad word at all, as long as you say it with a positive tone and you dont sound like a jerk.
Qué onda güero!" -What's up white boy!
"Le odio al pinche güero Jack." -I hate the freakin white boy Jack.
by ThumbSucker69 June 05, 2010
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Spanish slang for a white person, like calling someone a honkey. Can also be used as a term of endearment for a Latino who has lighter skin, probably of Spanish descent. Güero is masculine, güera is feminine.
I saw a bunch of güeros in Santa Fe the other day. They were all talking about art and shit. Pinche gringos.
by El Don Diguidi February 17, 2006
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if non-white person: light-skinned or fair-skinned person; if white person: "whitey"
hey, guero...
by jcottenttu December 05, 2010
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Guero is ment as a person who is light skinned with Caucasian features but not Caucasian and is a very cool person who has a bigger dick then most people
by Idk a pseudonym December 29, 2018
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Guero can be anybody's manbe as long as there light skinned and cute!
I love Guero...He's my babyboy...my love...
by BABYGIRL November 22, 2004
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Guero is actually a bastardization of the word "guerrero" which means warrior in Spanish. The use of "guero" dates back to the Spanish-American war where the American soldiers (or warriors) were referred to as gueros by the Spanish and Mexican soldiers.
Those gueros are taking back the Alamo!
by torresongs May 13, 2016
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