Letters that make bbs
s, b are letters that make 'bbs'
ebbs is a word created by adding a letter to 'bbs'
1 possible definitions for 'bbs'
Under this definition, bbs is a noun and has the following properties:
bulletin board system, bulletin board, electronic bulletin board have the same meaning as 'bbs'
'bbs' can be a type of digital computer.
'bbs' can be a category of computer science, computing.