boundboundboundsboundedbounding1 form of bindboundboundboundsboundedbounding3verb (bounds, bounding, bounded)to run with long steps: The dog bounded up the steps.boundboundboundsboundedbounding2adjectivebound tocertain to do something: She works very hard, so she is bound to pass the exam.bound forgoing to a place: This ship is bound for Hong Kong.