Added 10 October 2026 spacer /ˈspeɪsɚ/ noun Categories: Rare Words noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about spacer at Wordnik → Where our words come from → An object inserted to hold a space open in a row of items, e.g. beads or printed type. A person who works or lives in space. A bushing. Related Words: standoffdistancegifdividerseparatordelimiterbuffertabsplittersplitprotectorsplitting Back to today's word