Say “ow” after poke: blame husband! (7)

I believe the answer is:

digraph

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'say ow' is the definition.
I can't judge whether this definition defines the answer.

'after poke blame husband' is the wordplay.
'after' is a charade indicator (letters next to each other).
'poke' becomes 'dig' (synonyms).
'blame' becomes 'rap' (synonyms).
'husband' becomes 'h'.
'dig'+'rap' is 'digrap'.
'digrap'+'h'='DIGRAPH'

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(Other definitions for digraph that I've seen before include "Such as ph with f sound" , "EU, perhaps?" .)

I've seen this clue in The Times.

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