captain: [14] Etymologically, a captain is someone who is at the ‘head’ of an organization, team, etc. It derives ultimately from late Latin capitāneus ‘chief’, a derivative of caput ‘head’, which came to English via Old French capitain. A parallel but earlier formation was chieftain, which also came from late Latin capitāneus, but along a different route, by way of Old French chevetaine. => chieftain