noun, masculine/pɔ.li.pje/plural: polypiers
polypier, polyparium
“Dès les premiers froids, Emma quitta sa chambre pour habiter la salle, longue pièce à plafond bas où il y avait, sur la cheminée, un polypier touffu s'étalant contre la glace.” — When the first cold days set in Emma left her bedroom for the sitting-room, a long apartment with a low ceiling, in which there was on the mantelpiece a large bunch of coral spread out against the looking-glass.
polype + -ier