/ Dictionary / Index M mailable: Meaning and Definition of Find definitions for: mail•a•ble Pronunciation: (mā'lu-bul), [key] — adj. legally acceptable as mail, as in terms of content, size, or weight. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mail mailbag Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language