Top definition
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?"
by verydifferentname July 12, 2006
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2
I have three wonderful sibsters.
by Qith March 28, 2009
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One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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3
I have three wonderful sibsters.
by Qith March 28, 2009
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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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