Yes, tenons is a Scrabble word!
...and is worth 6 points in Scrabble, and 8 points in Words with Friends
tenons
Noun
1. A projection at the end of a piece of wood that is shaped to fit into a mortise and form a mortise joint
What Scrabble words can I make with the letters in tenons?
6 Letter Words
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words