Shortarm is valid Scrabble Word

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

Definitions for SHORTARM in dictionary:

How to use SHORTARM in a sentence

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