When a straight man is friends with a lesbian or group of lesbians.

A casual invitation / threat used by an individual that is not afraid of fucking someone up.

A heterosexual male whos best friend is a lesbian. He has a very strong relationship with her and will provide everything that a bestfriend does and more. Help her with everyday struggles, tell deepest secrets with eachother, and maybe even cuddle when needed, because who doesn't enjoy a good cuddle with a bestie. They'll go out and scope out hotties together, maybe even share the same taste in women. If they run into one they both want to go after maybe they'll share;) or not. A lezbro can get a lot of satisfaction from having a lesbian bestfriend.

When it all comes down, a lezbro is just a friend. Some who cares deeply for another person and will do anything to make sure their friend is ok.

A straight man with many lesbian friends.

A heterosexual male who has non-sexual, yet very close, personal relationships with lesbians. These relationships may be sexually non-threatening, and are often based on searching out other women for sexual relationships.

A heterosexual man who enjoys the company of the gay female community. This is basically the male version of a "Fag Hag," and a "Lez Bro" is comfortable going to gay bars, attending lesbian events, and watching "Ellen."

A straight male who has feminine qualities (but is still butch) who chooses to identify more with his lesbian/dyke sisters than with traditional heterosexual males.