A term for a female, mainly a straight female, who is attracted to other women, but only from the waist up. They can either be sexually or sensually attracted to women, but don't like the sexual parts below the waist.

This term was coined by someone trying to explain how their straight girlfriend was attracted to women, but didn't like vaginas. Thinking of how she loves mermaids, it made sense. The top half is a beautiful woman, and the bottom half has a gorgeous, sleek, colorful tail, with none of the sexual organs to be seen.
1. Oh my gosh, Lady Gaga is so hot, I'd totally make out with her, but I don't want to have sex with her, vaginas are so not my thing. I guess that would make me a mermaid lesbian.

2. I think I might be a mermaid lesbian, I love breasts so much, but when it comes to vaginas I get so grossed out...
by NimueLove November 9, 2018
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Similar to bambi lesbian, a lesbian that is e.g. aesthetically and/or romantically attracted to women but not sexually, hence their lower part being replaced with a cute fishtail.
A: This cheap bed would be way too fragile for us. Let's look for another one that we can actually use.
B: Like I would ever use it like that with you mermaid lesbian anyway...
A: What? I meant when we feel like having a pillow fight again, you perv!
by ColdKate August 28, 2021
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