What is Sibster?
1.
A sibster is a person who acts like everyone's sister. A sibster has lots of friends and pals, because they are very friendly. A sibster is like a sister but is of no blood relation.
"Nat's my sibster, ya know?"
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2.
a sibling who is a sister
I have three wonderful sibsters.
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3.
a sibling who is a sister
I have three wonderful sibsters.
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