Elbow room (6)
'elbow room' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for space that I've seen before include "Empty area, may be outer" , "Interstellar vacuum" , "Cosmos" , "Room; gap" , "Blank" .)
'elbow room' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for leeway that I've seen before include "Allowance" , "Room for free movement" , "Give" , "Room for movement within limits" , "Margin of safety" .)