catúr °tvā́ras m. pl., °tvā́ri n. pl., 4 (acc. m. °túras instr. °túrbhis [for f., [R. iv, 39, 33]] gen. °turṇā́m abl. °túrbhyas; class. instr. dat. abl., and loc. also oxyt. [Pāṇ. vi, 1, 180 f.]; ifc. [Kāś.] & [Siddh.] on [Pāṇ. vii, 1, 55] and [98 ff.]; for f. See cátasṛ);
[cf. τέσσαρες, τέτταρες, Aeol. πίσυρες; Goth. fidvor; Lat. quatuor; Cambro-Brit. pedwar, pedair; Hib. ceathair; Lith. keturi; Slav. cetyrje.]