referring to slugs or similar crawling invertebrates, primarily appearing in compound names like house centipedes

这种潮湿的地下室里经常可以看到蚰蜒。

used in the compound word 蜿蜒 wān​yán to describe a long, snaking, or meandering shape or movement

万里长城像一条巨龙，蜿蜒在崇山峻岭之间。