BUTTONHOLE

Yes, BUTTONHOLE is a Scrabble word!

Letter values in Scrabble US: B 3, U 1, T 1, T 1, O 1, N 1, H 4, O 1, L 1, E 1.B 3 · U 1 · T 1 · T 1 · O 1 · N 1 · H 4 · O 1 · L 1 · E 1

Is it a valid word?

• Scrabble US: valid, 15 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 15 points
• Scrabble UK: valid, 15 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 15 points
• Words with Friends: valid, 18 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 18 points