Plural of book; written works with pages, or records of transactions.
From Old English 'boc,' originally referring to beech wood (beech trees were used to make writing tablets). Eventually came to mean any written work bound together.
The word 'book' originally came from the tree used to make them—'beech' and 'book' share the same root! It's like how 'paper' comes from 'papyrus,' the plant it was made from.
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