Venomous type, man attracting firm support (4,5)
I believe the answer is:
king cobra
'venomous type' is the definition.
(I've seen this before)
'man attracting firm support' is the wordplay.
'man' becomes 'king' (king is a kind of man**).
'attracting' is a charade indicator (letters next to each other).
'firm' becomes 'co' (a firm is a company).
'support' becomes 'bra' (a support for the breasts).
'king'+'co'+'bra'='KING COBRA'
(Other definitions for king cobra that I've seen before include "Large venomous hooded snake" , "enormous snake" , "Venomous type" , "hooded killer" , "Hooded giant" .)