Definition of isthmus noun from the Oxford Advanced Learner's Dictionary

 

isthmus

 noun
noun
BrE BrE//ˈɪsməs//
 
; NAmE NAmE//ˈɪsməs//
 
Other geographic regions
 
jump to other results
a narrow strip of land, with water on each side, that joins two larger pieces of land See related entries: Other geographic regions Word Origin mid 16th cent.: via Latin from Greek isthmos.
See the Oxford Advanced American Dictionary entry: isthmus