Jamieson, Fausset and Brown on Isaiah 14:19

19. cast out of--not that he had lain in the grave and was then cast out of it, but "cast out without a grave," such as might have been expected by thee ("thy").

branch--a useless sucker starting up from the root of a tree, and cut away by the husbandman.

raiment of those ... slain--covered with gore, and regarded with abhorrence as unclean by the Jews. Rather, "clothed (that is, covered) with the slain"; as in Job 7:5, "My flesh is clothed with worms and clods of dust" [Maurer].

thrust through--that is, "the slain who have been thrust through," &c.

stones of ... pit--whose bodies are buried in sepulchres excavated amidst stones, whereas the king of Babylon is an unburied "carcass trodden under foot."