Definition of "regula" [regula]

• A book of rules or orders governing a religious house; the rule. (noun)
• In architecture, a short band or fillet, bearing guttæ or drops on the lower side, corresponding, below the crowning tænia of the Doric architrave, to the triglyphs of the frieze. See cut under ditrigiyph. (noun)

The Century Dictionary (Public Domain)

• "Perhaps the most interesting feature of his reconstruction of the "regula," or rule for the monks 'discipline, was his enactment with regard to the library and the studies of the brethren."
• ": rule, ruler; rule (of conduct, grammar); (règles = menstruation) [from the Latin, "regula"] (see a list of "règle" expressions at the end of this letter)"
• "They declared their adherence to the apostolic "regula" and the New Testament canon. ["