boss: English has two words boss, of which the more familiar is far more recent; both are fairly obscure in origin. We know that boss ‘chief’ [19] comes from Dutch baas ‘master’ (it was introduced to American English by Dutch settlers), but where Dutch got the word from we do not know for certain. Boss ‘protuberance’ [13] was borrowed from Old French boce, which comes from an assumed general Romance *botja, but there the trail goes cold. Boss-eyed [19] and boss shot ‘bungled attempt’ [19] are both usually assumed to come from, or at least be connected with a 19thcentury English dialect verb boss ‘bungle’, of unknown origin. [boss etymology, boss origin, 英语词源]