plaque madréporique
/lavˈe a la- maʃˈin a ˈlo ˈʃod avˌɛk aʒitasjˈɔ̃ ʁedyˈit/
n
English: madreporite · 筛板
Sens：Porous dorsal plate that allows water to enter the body; it connects the ambulacral ossicle to the outside world, and thus ensures locomotion.