/ Dictionary / Index M multiline insurer: Meaning and Definition of Find definitions for: mul'ti•line insur"er Pronunciation: (mul'ti-līn"), [key] an insurance company that is engaged in more than two fields of insurance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. multilinear form multilingual Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language