quicksand
意味
- 流砂(りゅうしゃ),砂地獄(人・動物がはまり込む危険な砂地)
語源
英語の原文（Wiktionary）
From Middle English quyksande, from Old English cwecesand (“quicksand”), equivalent to quick (“living”) + sand. Cognate with Swedish kvicksand (“quicksand”), Icelandic kviksandur, kviksyndi (“quicksand”). More at quick, sand.