Intended to wager on the rod being broken (9)
I believe the answer is:
betrothed
'intended' is the definition.
(I've seen this before)
'wager on the rod being broken' is the wordplay.
'wager' becomes 'bet' (synonyms).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'being broken' is an anagram indicator.
'the'+'rod'='therod'
'therod' is an anagram of 'rothed'.
'bet'+'rothed'='BETROTHED'
'to' acts as a link.
(Other definitions for betrothed that I've seen before include "Engaged - fiance" , "committed somehow" , "Spoken for" , "intended" , "Engaged or affianced" .)