sailduckEtymologyFrom sail + duck (“canvas-like material, rag”). Cognate with Saterland Frisian Saildouk, West Frisian seildoek, Dutch zeildoek, German Low German Seildook, German Segeltuch, Danish sejldug, Swedish segelduk, Icelandic segldúkur.nounDuck (a type of fabric) used as sailcloth.“Near-synonyms: duckcloth, duck”