Yes, lox is a Scrabble word!
...and is worth 10 points in Scrabble, and 11 points in Words with Friends
lox
Noun
1. A bluish translucent magnetic liquid obtained by compressing gaseous oxygen and then cooling it below its boiling point; used as an oxidizer in rocket propellants
2. Brine-cured salmon that is lightly smoked
What Scrabble words can I make with the letters in lox?
2 Letter Words