/ Dictionary / Index M mother ship: Meaning and Definition of Find definitions for: moth'er ship" Pronunciation: [key] a vessel or craft that services others operating far from a home port or center. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mother's helper mother spleenwort Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language