Amongst (4)
'amongst' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for amid that I've seen before include "In the course of" , "In the thick of" , "A dim sort of preposition" , "Among" , "Amongst" .)
(Other definitions for amidst that I've seen before include "It's mad (anag.)" , "Beset" , "During; within" , "In the centre of" , "Admits (anag.)" .)