Top Definition
Gaelic derivation of Thomas, meaning twin. Also spelled Tamsin or Tamsyn, both more common in the UK. Typically used for a woman's name in both the US and UK.
"What's your name?"
"Wow, what kind of name is that? It's so unique/odd/interesting/weird."
"It's Gaelic."
by muppetjedi February 05, 2010
1 more definition
11 Words related to tamsen
1. A Finnish Prostitute
2. A Smart kid
4. See taco
Dude, that girl is a Tamsen. I wonder if she's expensive.
by iahtebarbosa November 04, 2006

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