Groucho's prop
I believe the answer is:
cigar
'groucho's prop' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cigar that I've seen before include "Havana, say" , "A roll of leaf tobacco" , "Eg, Havana, panatella" , "Havana, perhaps" , "Item for smoking" .)