Empty space (4)
'empty space' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for vacuum that I've seen before include "There's nothing in it" , "Nature is said to abhor one" , "Space empty of matter" , "Does it take up" , "Totally empty space" .)
'empty space' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for void that I've seen before include "Gap, absence" , "Empty space or not legally binding" , "Vacant; not valid" , "Empty or vacant, like space" , "Free" .)
'empty space' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for gap that I've seen before include "Space (maybe for a year?)" , "Open space between two things, mind it" , "Hiatus" , "Cleft" , "Break, hole, space" .)