A vehicle lacking proper air conditioner function. Typically, a jalopy, or otherwise embarrassingly mal-conditioned vehicle. The result of riding in said vehicle is the dreaded sweatback, or sweaty back syndrome.
by Jraczkow December 24, 2008

Crossfit cultist or other fitness obsessives that show up in restaurants or grocery stores wearing their sweaty gym clothes.
by heartajack May 10, 2014

A sweatback is any illegal alien entering the United States from the south , through the desert. Not to be confused with wetbackswho swim across the Rio Grande.
by BaddadC March 29, 2020

(n.)- A racist, derrogatory, offensive term used to describe of person of Mexican or El Salvadorian descent. Sweat meaning getting there back wet and sweaty working in the fields, coining the term "sweatback."
by Maximus Bluntoff April 25, 2006

Sweatbacks are people who are out jogging or cycling on the road. They are in the way and apparently want to work out in front of people just to be noticed.
by Kimsky June 21, 2011

Bill Marty Mart's small, yet meager, former vehicle that lacked proper air conditioning abilities. It was inevitable to experience a sweatback when riding in it.
by Klottski December 24, 2008

by ego.sum.nemo July 25, 2017
