When I've heard it used, it has always meant that she shows off her body by wearing small, tight, or otherwise permiscuous clothing. She puts herself out there for everyone to see. It only gives the impression that she is looking for sex. It doesn't necessarily mean that she is.
MelLeDisko answered Sunday October 29 2006, 10:12 pm: Whenever people say a girl usually "puts out", it means she'll have sex with anybody. Well, not ANYBODY, but if she wants to hook up with a guy, she'll probably just go and do it.
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