What does SB. stand for?

What does SB. mean?

SB	Soft Branch Miscellaneous » Unclassified
SB	Special Body Business » Products
SB	Single Burial Miscellaneous » Unclassified
SB	Smart Bits Miscellaneous » Unclassified
SB	Suga Babe Miscellaneous » Unclassified
SB	Sophisticated Banks Miscellaneous » Unclassified
SB	Semi- Balance Academic & Science » Ocean Science
SB	Shallow Basket Miscellaneous » Unclassified
SB	Signed Byte Audio file Computing » File Extensions
SB	Skeleton Body Miscellaneous » Unclassified
SB	Smart Bl Miscellaneous » Unclassified
SB	Schellnack And Buttner Business » Firms
SB	Score Of Branch Community » Sports
SB	Soft Bus Miscellaneous » Unclassified
SB	Significant Bother Miscellaneous » Unclassified
SB	Skipped Birthday Miscellaneous » Funnies
SB	Successful Bachelors Miscellaneous » Unclassified
SB	Sticker Batch Miscellaneous » Unclassified
SB	Sangana Basava Miscellaneous » Unclassified
SB	Steve Blutcher Miscellaneous » Unclassified
SB	Storage Battery Miscellaneous » Unclassified
SB	Senate Bills Miscellaneous » Unclassified
SB	Senate Bill Miscellaneous » Unclassified
SB	Silly Bugger Miscellaneous » Unclassified
SB	Strong Bad signal Academic & Science » Amateur Radio