1 definition by ADubbs

Top Definition
see also PITA
a) the female sibling of a person's husband or wife.
b) a troublemaking sibling of your wife who spends all waking moments trying to cause trouble between you and your wife.
c) (WVA only), see Aunt Gladys.
My sister-in-law, Danielle, kept encouraging my wife to dump me.
by ADubbs July 01, 2005

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