The flute has four finger holes and one thumb hole at the back.

The note played by the thumb hole of the Uilleann pipe chanter.

The chanter's tonic is played with the top six holes and the thumb hole covered by fingers.

The tabor pipe has two finger holes and one thumb hole.

It is usually made with seven finger holes and a thumb hole.

The pages suddenly had a long thumb hole in them.

The second way is to hold the ball without the thumb in the thumb hole.

Not more than four foot ten, maybe five stone, eyes deep like thumb holes in a bowling ball.

Made of bamboo, it has six finger holes and one thumb hole and is open on both ends.

The metal is crushed, with eight finger impressions and two thumb holes clearly visible.