BritishUsed to emphasize that one is sure of something:she’s hatching more little plots, I’ll be bound!...
Too busy eating Turkey Twizzlers, I'll be bound.
She wasn't picked for the band for her singing talents, I'll be bound.
But in ‘Bridgwater Fair,’ Sharp has effectively collated and rewritten two texts and cut out such dubious but enjoyable lines as ‘You'll get so drunk now I'll be bound / You'll roll and tumble on the ground.’