Miss a blank space (5)
I believe the answer is:
avoid
'miss' is the definition.
(miss can mean to avoid)
'a blank space' is the wordplay.
'blank space' becomes 'void'.
'a'+'void'='AVOID'
(Other definitions for avoid that I've seen before include "Prevent from happening; nullify (law)" , "Elude" , "Keep out of the way of" , "Get out of" , "Sidestep" .)