柯林斯詞典isthmus /??sm?s/ (isthmuses) 1. N-COUNT An isthmus is a narrow piece of land connecting two large areas of land. 地峽[oft in names] ...the Isthmus of Panama. ...巴拿馬地峽。 返回 isthmus劍橋詞典 isthmus noun [C] (LAND) geography a narrow piece of land with water on each side that joins two larger areas of land 地峽 the Isthmus of Panama 巴拿馬地峽 isthmus noun [C] (IN BODY) medical a narrow connection between two organ parts or structures in the body （身體）峽部 返回 isthmus