CAPO

n. device for changing the tone of a stringed instrument

A capo (short for capotasto, Italian for "head of fretboard", also called a fret lobster) is a device used for shortening the strings, and hence raising the pitch, of a stringed instrument such as a guitar, mandolin or banjo. It was invented by the Flamenco guitarist Jose Patino Gonzalez[1]. There are several different styles of capo available, utilizing a range of mechanisms, but most use a rubber-covered bar to hold down the strings, fastened with a strip of elastic or nylon, a cam-operated metal clamp, or another device. Alternative terms are capo d'astro and capodastro, also Italian.
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Noun
1. the head of a branch of an organized crime syndicate
(hypernym) head, chief, top dog

da capo, start again from the beginning (musical instruction)

adj. chief, main, head

pref. chief, main, principal, leading

n. head, leader, boss, chief, headman, overman; lord, master, chieftain; top, article, item; foreland, ness, headland, cape