/ Dictionary / Index P power line: Meaning and Definition of Find definitions for: pow'er line" Pronunciation: [key] — Elect. Elect. a line for conducting electric power. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. powerless power loading 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