Radio show by a vulgar lot of actors? (9)
I believe the answer is:
broadcast
'radio' is the definition.
(thesaurus)
'by a vulgar lot of actors?' is the wordplay.
'by' means one lot of letters go next to another.
'a vulgar lot of' becomes 'broad' (I can't justify this - if you can you should give a lot more credence to this answer).
'actors?' becomes 'cast' (group of actors).
'broad' put next to 'cast' is 'BROADCAST'.
'show' is the link.
Can you help me to learn more?
(Other definitions for broadcast that I've seen before include "Transmit over airwaves" , "Show" , "Sow" , "distributed by hand" , "Send out by radio or television" .)