Clear EU caveat to be broadcast (8)
I believe the answer is:
evacuate
'clear' is the definition.
(thesaurus)
'eu caveat to be broadcast' is the wordplay.
'to be broadcast' indicates an anagram.
'eu'+'caveat'='eucaveat'
'eucaveat' is an anagram of 'EVACUATE'.
(Other definitions for evacuate that I've seen before include "flee" , "In wartime, remove civilians from cities to safety of countryside" , "Move out of an unsafe location" , "rescue from bad situation" , "Leave (a place of danger)" .)