Dos is valid Scrabble Word

Is dos a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is dos valid Words with Friends?
Words with Friends YES

Definitions for DOS in dictionary:

Words related to DOS

do3

How to use DOS in a sentence

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