Piles
'piles' is the definition.
('atomic reactor' can be a synonym of 'pile')
This is the entire clue.
'piles' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for heaps that I've seen before include "Shape (anag) - lots" , "A large number; untidy mounds" , "Mounds, stacks" , "Lots (of piles?)" , "Mounds; lots" .)
'piles' is the definition.
(synonyms)
This is all the clue.
(Other definitions for lots that I've seen before include "A great deal" , "Items offered at auction" , "Units sold at auctions - plenty of them" , "may be drawn" , "Many - items in a sale" .)