Acting head of institute plugs buzzword? (7)
I believe the answer is:
interim
'acting' is the definition.
(synonyms)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for interim that I've seen before include "Meanwhile" , "Caretaker" , "temporary period" , ", I'm put in grave situation initially" , "Temporary - provisional" .)