[ca.po] n, pl capos [short for capotasto, fr. It, lit., head of fingerboard] (1926): a movable bar attached to the fingerboard of a fretted instrument to uniformly raise the pitch of all the strings
[2]ca.po n, pl capos [It, head, chief, fr. L caput] (ca. 1963): the head of a branch of a crime syndicate