Top Definition
When a female's labia resemble the large moth-like creature from the 1960's Godzilla movies.
Jeremy: "I had sex with a cheerleader last night."
Joshua: "Really?! That's cool."
Jeremy: "No, it wasn't. She totally had a mothra crotch-- now I know why they wear bloomers."
by Thaddeus Maximus Erectus April 13, 2006
5 Words related to mothra crotch

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