The halter that elevates and holds in place human mammary glands, named for the inventor Phillipelde Brassiere.

Sometime in the mid twentieth century somebody started calling them bras, maybe because they could spell brassiere. Hardly any store advertises or customers ask for brassieres today. It's simply bra.

Got the covid-19 vaccine

A garment worn under the clothes used to "lift and separate" a female's breasts. The names comes from bracière, the old french word referring to arm protector. The brassiere replaced corsets as the female undergarment around the 1900s, when it was most likely developed by Herminie Cadolle. This term is now archaic however and the garment is simply referred to as a "bra," which is french for "arm". Brassiere is only useful when one needs to refer to bras in code: