RhymeZone: smb definitions

Definitions of SMB:

noun: (video games) Initialism of Super Mario Bros.
noun: (video games) Initialism of Super Meat Boy.
noun: (networking, Windows) Initialism of Server Message Block.
noun: (business) Initialism of small and medium-sized business or small- to medium-sized business.

(Definitions from Wiktionary)