Deep chasm (5)
'deep chasm' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for abyss that I've seen before include "Deep gulf" , "deep depression" , "Deep hole, seems bottomless" , "gaping hole" , "Hell; hole" .)
'deep chasm' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for gulf that I've seen before include "Wide difference of opinion" , "Large inlet of the sea" , "Deep inlet of the sea almost surrounded by land" , "Deep wide chasm" , "Rift" .)