/ Dictionary / Index C contra-guide rudder: Meaning and Definition of Find definitions for: con'tra-guide rud"der Pronunciation: (kon'tru-gīd"), [key] — Naut. Naut. a rudder having a horizontal offset of its upper and lower halves to improve the flow characteristics of the propeller race. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. contradistinguish contrail Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language