Certain leap (5)

I believe the answer is:

bound

I believe this is a double definition.

'certain' is the first definition.
(as in the phrase 'it's bound to be')

'leap' is the second definition.
(synonyms)

(Other definitions for bound that I've seen before include "Certain - fastened" , "Confined" , "Bob < sure < to be heading for" , "Jump - certain - limit" , "demarcation" .)

I've seen this clue in The Times.

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