Cellblock is valid Scrabble Word

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

Definitions for CELLBLOCK in dictionary:

Words related to CELLBLOCK

cellblocks20

Words that contain CELLBLOCK

cellblocks20
Find what other words can be done using letters: "cellblock"
https://scrabble-word.com/finder/cellblock
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