/ Dictionary / Index R rax: Meaning and Definition of Find definitions for: rax Pronunciation: (raks), [key] —v.i. to stretch oneself, as after sleeping. to extend the hand. —v.t. to elongate; stretch. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. raw umber ray Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language