cănon, ŏnis, m. (acc. canona, Plin. 34, 8, 19, § 55; acc. plur. canonas, Aus. Ep. 136; in Cic. Fam. 16, 17, 1, used as a Greek word), = κανών [κάννα, κάνη, a reed, cane].
I A marking or measuring line; hence, a rule , canon , model (cf. Lidd. and Scott, under κανών).—
II Esp.
A A wooden channel in hydraulic instruments , Vitr. 10, 13 Rod.—
B Under the emperors, an annual tribute , established by law , in grain , gold , silver , clothing , etc., Spart. Sev. 8; Lampr. Elag. 27.—
C In eccl. Lat., a catalogue of sacred writings , as admitted by the rule , the Canon , Aug. Doctr. Christ. 2, 8; Hier. Prol. Gal. Aug. Civ. 17, 24; 18, 38; cf. Isid. Orig. 6, 15 and 16.—
D Also in late Lat., from their shape, in plur.: cănŏnes , um, cannon : et illic figere gunnas suas, quas Galli canones vocant, quibus validius villam infestare posset, Thom. Walsingham in Henry V. p. 398.