The most common and most likely answer to this crossword clue is the 9 letter word DUPLICATE
I've seen this crossword clue in The Daily Telegraph
D
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More clues leading to the result DUPLICATE
- Same thing, party whip involved in deception
- Copy cat in romance after afters return
- Not unique type of bridge
- Copy political party with untruth about woman being nasty?
- Bridge match?
- Lookalike leading lady is deleted from offensive adult clip by second censor
- . Identical citadel built on high parts
- Copy a top clue I'd constructed without a trace of originality
- Copy political party and lie about whip
Buddy explains!

The straight part
We know that "Not unique/type of bridge" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case not unique/type of bridge = duplicate.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DUPLICATE mean?
DUPLICATE noun- One that resembles or corresponds to another; an identical copy.
- An original instrument repeated; a document which is the same as another in all essential particulars, and differing from a mere copy in having all the validity of an original.
- A pawnbroker's ticket, which must be shown when redeeming a pledged item.
- The game of duplicate bridge.
- The game of duplicate Scrabble.
- A biological specimen that was gathered alongside another specimen and represents the same species.
- To make a copy of.
- To do repeatedly; to do again.
- To produce something equal to.
- Being the same as another; identical.
- (games) In which the hands of cards, tiles, etc. are preserved between rounds to be played again by other players.