Casebound is valid Scrabble Word

Is casebound a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is casebound valid Words with Friends?
Words with Friends YES

Definitions for CASEBOUND in dictionary:

Words related to CASEBOUND

hardback20
Find what other words can be done using letters: "casebound"
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