Lewis & Short

lārĭdum, and sync. lardum (collat. form, lārĭda, ae, f., sc. caro, Cod. Th. 8, 4, 17), i, n. [kindr. with λαρός, λαρινός, fattened, fat], the fat of bacon, lard.
Form laridum: quanta pernis pestis veniet! quanta labes larido! Plaut. Capt. 4, 3, 3; 4, 2, 67; id. Men. 1, 3, 27.
Form lardum: lardum ossa fracta solidat, Plin. 28, 16, 65, § 227; Hor. S. 2, 6, 64; 85; Mart. 5, 78; Juv. 11, 84.
In plur.: larda, Ov. F. 6, 169.