I.a mother's murderer, a matricide (rare but class.): “quem scribis certissimum matricidam,” Cic. Q. Fr. 1, 2, 2; Nep. Alc. 6, 2: “cantavit Oresten matricidam,” Suet. Ner. 21.—In tmesi: “matrique cida Nero,” Aus. de XII. Caes. 35 (al. matrīcīda Nero).
mātrĭcīda (scanned matrĭcĭda, Sid. Carm. 5, 291), ae, comm. mater-caedo,