'boffo' definitions:

Definition of 'boffo'

(from WordNet)
adjective
Resoundingly successful and popular; "for years he was a boffo box office certainty"

Definition of 'boffo'

From: GCIDE
  • boffo \bof"fo\ a. highly successful; superbly well done. [slang] [PJC]

Definition of 'boffo'

From: GCIDE
  • boff \boff\, boffo \bof"fo\n.
  • 1. (Theater) a hearty laugh. [PJC]
  • 2. (Theater) a joke or gag line that produces hearty laughter. [PJC]
  • 3. (Theater) something very successful, especially a box-office hit. [PJC]