Crossword Genius

Kind of door catch (4)

Ross

I believe the answer is:

trap

I believe this is a double definition.

'kind of door' is the first definition.
(I've seen this in another clue)

'catch' is the second definition.
(I know that catch is a is a more specific form of the action of trap)

(Other definitions for trap that I've seen before include "Light carriage - it's sometimes sprung!" , "Part of a snare" , "Device to catch prey" , "Means of transport - sometimes sprung!" , "Cakehole (slang)" .)

I've seen this clue in The Globe and Mail and The Telegraph.
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