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
Words nearby space bar
spa,
spaak,
spaatz,
space,
space age,
space bar,
space biology,
space blanket,
space cadet,
space capsule,
space carrier