Ingenious use of can-opener to pry it open (6)
I believe the answer is:
clever
'ingenious' is the definition.
(I know that ingenious can be written as clever)
'use of can-opener to pry it open' is the wordplay.
I cannot quite see how this works, but
'pry' could be 'lever' (synonyms) and 'lever' is present in the answer.
A single letter 'c' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for clever that I've seen before include "Quick and intelligent" , "Highly intelligent" , "easy to teach?" , "Mentally or physically skilful" , "Gifted" .)