Top Definition
Well, there is a story behind this one.

Once I was on a chatline, and I got a message from some guy from a foreign country that went something like this:
"Hello ! My seastre !"

The only thing that I figgured he could have meant was "sister."

So seastre is a poor-english spelling of sister.
Hello ! My Seastre !
by Art Vandelay March 13, 2003

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