octōnārĭus — Lewis & Short
octōnārĭus, a, um, adj.octoni,
I consisting of eight:
numerus,Varr. L. L. 9, § 86 Müll.:
versus,an Iambic verse of eight feet, Quint. 9, 4, 72; Diom. p. 514 P.:
fistula,the plate for which was eight inches broad, Front. Aquaed. 28; 42; Plin. 31, 6, 31, § 58.