space bar


noun

a horizontal bar on a typewriter keyboard that is depressed in order to resume typing one space to the right.
a horizontal bar on a computer keyboard that is depressed in order to move the cursor one space to the right or, often, to perform some function in a program.

Origin of space bar

First recorded in 1885–90

British Dictionary definitions for space-bar

space-bar

noun

a horizontal bar on a typewriter that is depressed in order to leave a space between words, letters, etc