Pain in stomach eases (4)

I believe the answer is:

ache

'pain' is the definition.
(ache is a kind of pain)

'in stomach eases' is the wordplay.
'in' indicates a hidden word.
'ACHE' is hidden within 'stomach eases'.

(Other definitions for ache that I've seen before include "Long ? pain" , "yearning" , "Feel sore" , "Dull prolonged pain" , "agony" .)

I've seen this clue in The Telegraph.

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