Bridge odds on two queens (7)
I believe the answer is:
spanner
'bridge' is the definition.
(something which spans two points)
'odds on two queens' is the wordplay.
'two queens' means two substitutions for 'queen'.
'odds' becomes 'sp' (betting abbreviation for starting price).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'queen' becomes 'anne' (Queen Anne, 18th-century queen).
'queen' becomes 'r' (abbreviation for regina, e.g. in ER ).
'sp'+'anne'+'r'='SPANNER'
(Other definitions for spanner that I've seen before include "In the works, it's disruptive" , "Tool for gripping nut" , "Tool, often adjustable" , "Nut-tightening tool" , "Nut turner" .)