Throw flaming bottles single-mindedly, for starters (4)
I believe the answer is:
host
'throw' is the definition.
(eg to throw a party)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for host that I've seen before include "Present" , "Party-giver" , "Crowd-entertainer" , "Myriad" , "Entertain" .)