What keeps still, extremely withdrawn? A canine offered in swap deal? (8)
I believe the answer is:
eyetooth
'a canine offered in swap deal?' is the definition.
I can't judge whether this definition defines the answer.
'what keeps still extremely withdrawn?' is the wordplay.
'what' becomes 'eh' (sound used to ask 'what?' or 'pardon?').
'keeps' is an insertion indicator (inserted letters are kept inside).
'still' becomes 'yet' (yet can mean still or so far).
'extremely' becomes 'too' (eg extremely expensive could mean too expensive).
'withdrawn?' says the letters should be written in reverse.
'too' in reverse letter order is 'oot'.
'yet'+'oot'='yetoot'
'eh' going around 'yetoot' is 'EYETOOTH'.
Can you help me to learn more?
(Other definitions for eyetooth that I've seen before include "Yet he too (anag.)" , "Canine in upper jaw" .)