Usually refers to any style of (usually) tight-fitting cotton shirts primarily worn by men as undershirts. Any of the types of white t-shirt or tank top that you can usually find sold in packages by the men's underwear can be classfied as a wifebeater.
While the "wifebeater" is worn primarily by men -- and presumably got the name because it is most often depicted as being worn as outerwear by men who beat their wives -- lots of women have taken to wearing them too. This is particularly true in the case of the cotton ribbed tank top, which can now be found sold as outerwear for women as well as men, and which can also be found in several other colors besides white.
Yuck ... see that dude in the wifebeater over there? His chest hair is, like, sticking out all over the place!
15๐ 5๐
"My boyfriend dumped me for dumped me for a large gherkin."
"That basatrad!."
2๐ 2๐
hip and super cool. usually used by people who use words like hip.
36๐ 15๐