isthmus - Dictionary definition and meaning for word isthmus
Consider the first letter(I) and the last letter(S). Remember the word as the isthmus between India and Srilanka constructed by Vanarsena :)
IS THe MUSt for travelling between two bodies of land
isthmus:isth(THIS)+mus(SUM).this sum is connected to another sum so getting solution we have to connect both the sums.
ItS THe nUS (MUS). The piece of land must be acting as an important means of connection during war times. The general of the enemy army says "That isthmus IS THe NUS. Cut it!!!"