/ Dictionary / Index P Plimsoll mark: Meaning and Definition of Find definitions for: Plim'soll mark" Pronunciation: [key] — Naut. Naut. SeeAlso called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Plimsoll line plink Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language