/ Dictionary / Index P plf: Meaning and Definition of Find definitions for: plf Pronunciation: [key] pounds per linear foot. plf. Pronunciation: [key] plaintiff. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: plf (Thesaurus) Pleyel pli Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language