Summon (4)
'summon' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for call that I've seen before include "Ring; name" , "Entitle" , "Visit; cry out" , "Cry - summon" , "Ring or visit" .)
'summon' is the definition.
(I know that summon can be written as call up)
This is all the clue.
(Other definitions for call up that I've seen before include "enlist" , "Recollect - telephone" , "Act of conscription into the armed forces" , "Summons for military service" , "Order to report for military duty" .)