a female person who has the same parents as another person; sister
my sister married a musician
English Slang Dictionary
a sister
Microsoft Computer Dictionary
n. Acronym for Single Image Stereogram. See autostereogram.
File Extension Dictionary
Nokia Phone Program (Nokia) SiSoftware Sandra Professional Business Script (SiSoftware) Student Information System Data File (Enray Consulting, Inc.) Symbian OS Installer File (Symbian)
