/ Dictionary / Index P pregnable: Meaning and Definition of Find definitions for: preg•na•ble Pronunciation: (preg'nu-bul), [key] — adj. capable of being taken or won by force: a pregnable fortress. open to attack; assailable: a pregnable argument. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. preglacial pregnancy Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language