Deep fissure (5)
'deep fissure' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for crevasse that I've seen before include "Deep glacial crack" , "gap" , "cold break" , "13 in a glacier" , "Deep fissure in a glacier" .)
'deep fissure' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for chasm that I've seen before include "Gorge" , "Yawning gap" , "Pit" , "rent" , "One gapes" .)