Added 10 October 2026 centerline noun Categories: Describing WordsRare Words noun ! Definition from WordNet 3.1, Princeton University. More about centerline at Wordnik → Where our words come from → A line that bisects a plane figure. Origin From center + line. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: axisfocuscentrelinemainstreamcountershaftlynchpinlinchpinaxleshaftcentrepieceaxe Back to today's word