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Two women who have slept with the same man in their past.
Judy and Gail were Eskimo sisters since they both went to bed with Ronnie during their freshman year.
by Joe Corey February 14, 2004
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A woman who has shared a sexual partner with another person and the two are on friendly terms. In today's day and age, the eskimo sibling could be a male or another just never know.
Jenna: "Hey do you see that girl with the tramp stamp? I totally did her last week at Michelle's party."

Brad: "What? I was inside her the night before. Give me a high five. You're my eskimo sister!
by EskimoSibling January 10, 2012
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When two women have had sex with the same man on different occasions, or maybe not :)
The same penis has entered two women's vagina's at one time or another.
Girl: Both me and shaliqua fucked Tyrone when we was in a relationship, he was fine as shit.
Girl 2: shiiit! Now you hoes are eskimo sisters!!!
by Football, money and ladies November 20, 2015
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Two or more women who have performed fellatio on the same man (not necessarily at the same time) and swallowed his cum.
"You sucked Robbie off too? Now we're Eskimo Sisters!"

Can also be used in the context of the man referring to the women as his Eskimo Sisters:

"Hey, those girls at the bar are cool--let's join them"
"How do you know them?"
"They're my Eskimo Sisters."
by JacksonDollup October 04, 2013
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An all female group of queens who are as hot as they are intimidating. They have no time for men, but still have kings. If you want to sleep with anyone in the group you have to consider sleeping with them all.
you: "Who is that powerful group of girls over there?"
me: "Oh. Those are the eskimo sisters"
you: "They are so powerful"
me: "Every knee shall bow."

Eskimo sister: "if you wanna be my lover, you better get with my friends."
by SuckMyFuckingToeBitch!!!! January 17, 2018
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