Crossword Genius

Promise to get collateral (6)

Ross

I believe the answer is:

pledge

This clue is a double definition.

'promise' is the first definition.
(pledging is a kind of promising)

'collateral' is the second definition.
(thesaurus)

'to get' is the link.

(Other definitions for pledge that I've seen before include "Plight" , "assurance" , "Deposit" , "Bond" , "Solemn undertaking" .)

I've seen this clue in The Telegraph.
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