Pronunciation: (bak'spās"), [key]
—v., -spaced, -spac•ing,
1. to shift the carriage or typing element of a typewriter one space backward by depressing a special key.
2. Computers.to move the cursor, printhead, etc., toward the beginning of the data.
1. the space made by backspacing.
2. Also called back'spac"er, back'space key". the labeled key on a typewriter or computer keyboard used for backspacing.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.