- 户 戶 noundoor(bound form) a single-leaf door; an entrance or opening to a house
- pivot(bound form) the hinge or axis of a door; a mechanical pivot
- 不 adverbnotNegative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
- to corrode(bound form) to eat into; to corrode; to be moth-eaten or worm-eaten