Speech test or examination (4)
I believe the answer is:
oral
I believe this is a triple definition!
'speech' is the first definition.
(oral means relating to speech)
'test' is the second definition.
(oral is a type of examination)
'or' acts as a link.
'examination' is the third definition.
(oral is a kind of examination)
(Other definitions for oral that I've seen before include "Exam using speech" , "Spoken exam" , "Concerning the mouth" , "Mouth-related" , "Spoken test" .)