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1.
Domina is a Latin word which means 'Mistress'

This is usually used in the context of BDSM Domination

There are several clubs which use this title as their name. These are almost all BDSM clubs with a FemDom (female domination) theme
Club Domina in north London has a lovely resident house domme
by DutchCappedCrusader January 10, 2014
 
2.
A dominatrix.
Mistress Fluffy is a wonderful Domina.
by Candie May 04, 2004
 
3.
A woman of rank; a woman holding a barony in her own right.
She is a Domina, nothing to do with Dominatrix.
by The Only Domina May 17, 2011
 
4.
name typically taken by an extremely attractive girl. loves disney movies, eye contact, salmon everyday, and being tickled at all times. demands her own movie theater every time she visits the cinema.
Wow, that hot girl just put on a pair of hard plastic 3-d glasses and people immediately started calling her domina.

I went to go see a movie today with my friends but I got kicked out after some girl named domina demanded she have the whole theater to herself.
by Lumière February 02, 2012