Long section of a tea chest (4)

I believe the answer is:

ache

'long' is the definition.
('ache' can be a synonym of 'long')

'section of a tea chest' is the wordplay.
'section of' says the answer is hidden in the clue.
'ACHE' is hidden in the letters of 'tea chest'.

(Other definitions for ache that I've seen before include "Hurt; yearn" , "suffering" , "painful" , "Longing" , "Continuous hurt" .)

I've seen this clue in the Evening Standard.

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