spacer

A device used in cable telegraphy for reversing the current at proper intervals, thus increasing the speed of transmission: also used for a somewhat similar purpose on land-lines.

In a typewriter, a key, and the mechanism connected with it, by which spaces are made between words.

In a type-setting machine, a device for spacing words.

Anything by which a space or interval is made.

A person who works in space.

An object inserted to hold a space open in a row of items, e.g. beads or printed type.

A bushing.

A forgetful person.

A type of add-on device used by an asthmatic person to increase the effectiveness of a metered-dose inhaler.