Charles Moorhead makes this void (5)
I believe the answer is:
chasm
'this void' is the definition.
(thesaurus)
'charles moorhead' is the wordplay.
'charles' becomes 'Chas' (shortened form).
'moorhead' becomes 'm' (head letter of 'moor').
'chas'+'m'='CHASM'
'makes' acts as a link.
(Other definitions for chasm that I've seen before include "What's split" , "A deep opening in the earth" , "Pit" , "Deep opening in the earth's surface" , "Great divide" .)