noun, masculine/feminine/ka.pi.tɛn/plural: capitaines
capitaine is masculine or feminine depending on context in French.
captain, leader; giant African threadfin (Polydactylus quadrifilis)
Inherited from Middle French capitaine, from Old French capitaine, borrowed from Late Latin capitaneus, from Latin caput. Compare the inherited Old French chevetaine (whence English chieftain). Doublet of cheftaine.