Jisho

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Wikipedia definition
1. Billiard ballRussian pool and kaisa—68 mm (2⁄16 in) Carom—61.5 mm (2⁄16 in) American-style pool—57 mm (2⁄4 in) British-style pool (largish) —56 mm (2⁄16 in) Snooker—52.5 mm (2⁄15 in) Scaled-down pool—51 mm (2 in) for children's smaller tables Not shown: half-scale children's miniature pool—approximately 28.5 mm (1⁄8 in).
Read “Billiard ball” on English Wikipedia
Read “ビリヤードボール” on Japanese Wikipedia
Read “Billiard ball” on DBpedia

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