Meandering line of river (4)
I believe the answer is:
nile
'river' is the definition.
(Nile River is an example)
'meandering line' is the wordplay.
'meandering' indicates anagramming the letters.
'line' anagrammed gives 'NILE'.
'of' acts as a link.
(Other definitions for nile that I've seen before include "eastern flower" , "Take a line to the river" , "World's longest river" , "River of Egypt" , "African river" .)