/ Dictionary / Index D Díaz del Castillo: Meaning and Definition of Find definitions for: Dí•az del Cas•til•lo Pronunciation: (dē'äth el käs-tē'lyô), [key] 1492–1581, Spanish soldier-historian of the conquest of Mexico. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Díaz de Bivar diazepam 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