Trust porky husband to eat last of chilli (5)
I believe the answer is:
faith
'trust' is the definition.
(I know that trust can be written as faith)
'porky husband to eat last of chilli' is the wordplay.
'porky' becomes 'fat' (I've seen this in another clue).
'husband' becomes 'h'.
'to eat' indicates putting letters inside.
'last of' suggests the final letters.
The last letter of 'chilli' is 'i'.
'fat'+'h'='fath'
'fath' placed around 'i' is 'FAITH'.
(Other definitions for faith that I've seen before include "Unshakeable belief" , "Trust in someone" , "A woman" , "Strong belief in a supernatural power" , "Staunch trust" .)