Home › Words › M › mouthlinemouthlinemouthline · noun — the line formed by a creature's closed mouth.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom mouth + line.nounThe line formed by a creature's closed mouth.e.g.“Traditionally, duckbill dinosaurs have been portrayed as cheekless, with the mouthline running from chin to ear[…]” — 1986, Robert T. Bakker, The dinosaur heresies:Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.lipline 66% match — The outline shape of the lips. vs mouthline →mouthie 60% match — The mouth. vs mouthline →lashline 56% match — The line of the eyelash. vs mouthline →mouthless 55% match — Without a mouth. vs mouthline →mouthing 54% match — The act of forming a shape with the mouth. vs mouthline →underlip 53% match — The lower lip. vs mouthline →jawline 53% match — The lower edge of the side of the face (below the cheek), defined by the jawbone. vs mouthline →cheilion 52% match — The corner of the mouth (as used in cephalometry) vs mouthline →