(architecture) A tower or steeple specifically for containing bells, especially as part of a church. / (architecture) A part of a large tower or steeple, specifically for containing bells.

plural of belfry

Furnished with a belfry or belfries. / (in combination) Having a belfry or belfries of a specified number or kind.

(idiomatic, intransitive) To be crazy or eccentric.

Third-person singular simple present indicative form of have bats in one's belfry

simple past tense and past participle of have bats in one's belfry

present participle of have bats in one's belfry