Eiks is valid Scrabble Word

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

Definitions for EIKS in dictionary:

Words related to EIKS

eik7
Find what other words can be done using letters: "eiks"
https://scrabble-word.com/finder/eiks
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