Animal droppings disturbed one in cell? (7)
I believe the answer is:
dungeon
'cell?' is the definition.
(thesaurus)
'animal droppings disturbed one in' is the wordplay.
'animal droppings' becomes 'dung' (**).
'disturbed' is an anagram indicator.
'in' means one lot of letters goes inside another.
'one' is an anagram of 'eon'.
'dung' put within 'eon' is 'DUNGEON'.
(Other definitions for dungeon that I've seen before include "Place of confinement underground" , "Dark underground cell for prisoners" , "Dark prison cell" , "Prison cell, often underground" , "Dark place of confinement" .)