circuit binding

American  

noun

1. a bookbinding having soft edges that project beyond and fold over the edges of the pages to protect them.

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circuit binding British  

noun

1. a style of limp-leather binding, used esp for Bibles and prayer books, in which the edges of the cover bend over to protect the edges of the pages

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Etymology

Origin of circuit binding

An Americanism dating back to 1905–10