A dominatrix
The other woman in an extramarital relationship, generally including sexual relations
A female companion to a master (a man with control, authority or ownership)
A woman, specifically one with great control, authority or ownership
a woman regarded with love and devotion; a sweetheart
A married woman; a wife
A female teacher
A woman well skilled in anything, or having the mastery over it
To act or take the role of a mistress.
Of a woman: to master; to learn or develop to a high degree of proficiency.
A primal cut (of meat).
To take part in primal therapy.
Being the first in time or in history.
Of greatest importance; primary.
Being one of the pieces of meat initially separated from the carcass during butchering, prior to division into smaller cuts.