/ Dictionary / Index O Oxford rule: Meaning and Definition of Find definitions for: Ox'ford rule' Pronunciation: [key] — Typography. Typography. a type that prints a thick line together with and parallel to a thin one. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Oxford movement Oxfordshire Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language