/ Dictionary / Index T twelve-mile limit: Meaning and Definition of Find definitions for: twelve'-mile lim'it Pronunciation: (twelv'mīl"), [key] the offshore boundary of a state, extending 12 miles (19 km) at sea. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. twelve-inch twelvemo 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