Capo (noun)

A device placed on the fingerboard of a stringed instrument, such as a guitar or ukulele, to raise the pitch of all the strings by the same amount.

Origin:

From the italian word "capotasto" meaning "head of the fingerboard".

Examples:

1. He placed a capo on the third fret to play the song in a different key.
2. The musician used a capo to change the key of his guitar for singing.
3. The capo is a useful tool for guitarists to play songs in different keys.
4. He had a capo for each of his guitars, so he could play any song in any key.
5. The capo allows you to play chords and melodies that would otherwise be difficult.