Language: en
Meaning: (idiomatic,intransitive)To becrazyoreccentric.Anyone declaring himselfEmperorof San Francisco probablyhad bats in his belfry.1900, Mary Etta Stickney,Brown of Lost River, page254:You would certainly take the prize forbats in the belfry!--flying off on a wild-goose chase across a country where even the geese need a compass to keep to the course.1930,Sax Rohmer,The Day the World Ended, published1969, pagexv. 136:"That's sane," he replied mechanically. "I figured all along there were nobats in your belfry."
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