ClipArt ETC
"The rim or border of anything, especially of a shield or chariot. The trim of the large round shield of the ancient Greeks, was thinner than the part which it enclosed: but on the other hand, the antyx of a chariot must have been thicker than the body to which it gave both form and strength. In front of the chariot the antyx was often raised above the body, into the form of a curvature, which served the purpose of a hook to hang the reins upon." — Smith, 1873

Antyx

"The rim or border of anything, especially of a shield or chariot. The trim of the large round shield…

"A cap worn by the flamines and salii at Rome. The essential part of the apex, to which alone the name properly belonged, was a pointed piece of olive-wood, the base of which was surrounded with a lock of wool. This was worn on the top of the head, and was held there either by fillets only, or, as was more commonly the case, by the aid of a cap which fitted the head, and was also fastened by means of two strings or bands." — Smith, 1873

Apex

"A cap worn by the flamines and salii at Rome. The essential part of the apex, to which alone the name…