RhymeZone: esb definitions

Hey you! Yes, you! Thank you for adding beauty to the world!

Definitions of ESB:

noun: (beer) Initialism of extra special bitter.
noun: (computing) Initialism of enterprise service bus. [(computing) A layer in the abstract architecture of the message system of an organization.]
noun: (Ireland) Initialism of Electricity Supply Board.

(Definitions from Wiktionary)