Pisser is valid Scrabble Word

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

Definitions for PISSER in dictionary:

Words related to PISSER

pissers9
Find what other words can be done using letters: "pisser"
https://scrabble-word.com/finder/pisser
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