Request wood, including bark of sycamore? (7)
I believe the answer is:
beseech
'request' is the definition.
(I know this)
'wood including bark of sycamore?' is the wordplay.
'wood' becomes 'beech' (beech is a kind of wood).
'including' indicates putting letters inside.
'bark of' says to hollow out the word (remove centre letters) (the outside letters or 'bark' of the word).
'sycamore' with its centre taken out is 'se'.
'beech' placed around 'se' is 'BESEECH'.
(Other definitions for beseech that I've seen before include "wood" , "Beg earnestly, implore" , "request, urgently" , "petition" , "Fervently ask (someone) for something" .)