place name · the border region or geographical intersection where the ancient states of Wu and Chu met, typically referring to modern-day Jiangxi province

江西地处吴头楚尾，自古以来就是商贸往来的重要枢纽。

idiom · closely linked or contiguous in time or space; occurring in a sequence where one thing begins immediately after another ends

这两项工程吴头楚尾，需要统筹安排施工进度。