Attack on way to introduce comedian (9)
I believe the answer is:
onslaught
'attack' is the definition.
(synonyms)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for onslaught that I've seen before include "Heavy attack" , "Hunt goals (anag) - offensive" , "Destructive attack" , "offensive action" , "Sudden and severe onset of trouble" .)