Develop cover for hold (5)

I believe the answer is:

hatch

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This could be a double definition.

'develop' is the first definition.
(thesaurus)

'cover for hold' is the second definition.
'hatch' can be an answer for 'cover' (synonyms). I am not certain of the 'for hold' bit.

Can you help me to learn more?

(Other definitions for hatch that I've seen before include "contrive to > emerge in > shade" , "Trapdoor cover" , "Brood" , "Breed" , "Deck opening; (egg) open" .)

I've seen this clue in the Sydney Morning Herald.

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