/ Dictionary / Index S subclavian vein: Meaning and Definition of Find definitions for: subcla'vian vein' Pronunciation: [key] — Anat. Anat. either of a pair of veins, one on each side of the body, that return blood from the arms to the heart. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subclavian artery subclavius Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language