noun, feminine/ø.tɛ̃.te.ʁi/plural: euthyntéries
euthynteria (in classical Greek architecture, the uppermost course of a building's foundations, partly emerging from the groundline)
“Le mur proprement dit s’élève au-dessus de l’euthyntérie.”
From Ancient Greek εὐθυντηρία (euthuntēría).