Lawsuit covering rogue's fall (7)
I believe the answer is:
cascade
'fall' is the definition.
(cascade can mean to fall or pour)
'lawsuit covering rogue's' is the wordplay.
'lawsuit' becomes 'case' (a legal case).
'covering' indicates putting letters inside.
'rogue' becomes 'cad' (I've seen this before).
'case' going around 'cad' is 'CASCADE'.
(Other definitions for cascade that I've seen before include "Rush" , "Tumble down (like water)" , "falls in the river" , "Waterfall or deluge" , "Torrent" .)