/ Dictionary / Index P plank floor: Meaning and Definition of Find definitions for: plank' floor' Pronunciation: [key] — Shipbuilding. Shipbuilding. a floor made from sawed, straight-grained timber. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plank planking Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language