(UK) Wild mint (, now ).
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(US) A coarse American plant of the mint family ().
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(Western US) An aromatic plant of the mint family, .
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Add your own interpretation of "horsemint".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.