Crossword Genius

Firm keeps duck in store (5)

Ross

I believe the answer is:

hoard

'store' is the definition.
(I know that hoard is a type of store)

'firm keeps duck' is the wordplay.
'firm' becomes 'hard' (both can mean durable or strong).
'keeps' is an insertion indicator.
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'hard' placed around 'o' is 'HOARD'.

'in' acts as a link.

(Other definitions for hoard that I've seen before include "Accumulation" , "Collection" , "(Miser's) store" , "One's savings" , "Amass secretly" .)

I've seen this clue in The Sun.
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