soundhole
nounUK /ˈsaʊndhəʊl/
US /ˈsaʊndhoʊl/
A soundhole is the round hole in a guitar that lets the sound come out.
She peeked through the soundhole to see the label inside the guitar.
OTHER MEANINGS
2. The opening in the body of a stringed instrument such as a violin or lute that projects sound.
The violin's soundhole is shaped like a fancy letter f.
3. An opening in a speaker cabinet or enclosure that helps shape the sound.
The speaker's soundhole lets the bass come through more strongly.
4. A hole in a wind instrument or whistle through which air escapes to make sound.
He covered the soundhole with his finger to change the note.