Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
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.