/ Dictionary / Index P Pleasant Hill: Meaning and Definition of Find definitions for: Pleas'ant Hill' Pronunciation: [key] a city in W California, near San Francisco Bay. 25,124. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pleasant Grove Pleasant Island 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