plinthis
ĭdis, f.
I.
A square; in architect., a square base, a plinth, for plinthus, Vitr. 3, 3, 2; in land-surveying, for plinthus, Hyg. Condit. Agror. p. 210 Goes.—
II.
Plur.: plinthĭ-des, a register in the hydraulic organ, Vitr. 10, 8, 8; v. pleuritis.