Troilite :: Troilite (n.) Native iron protosulphide, FeS. It is known only in meteoric irons, and is usually in imbedded nodular masses of a bronze color..
Troilus :: Troilus (n.) A large, handsome American butterfly (Euph/ades, / Papilio, troilus). It is black, with yellow marginal spots on the front wings, and blue spots on the rear wings..