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Meaning of carriage return

car'riage return"

Pronunciation: [key]
  1. (on a typewriter) the key or mechanism that causes the next character typed to appear at the left margin and on a new line.
  2. the symbol, command, or keythat causes the printer to be positioned or the cursor to be displayed at the left margin.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.