Container of pecan nuts (3)
I believe the answer is:
can
'container' is the definition.
(can is a kind of container)
'of pecan nuts' is the wordplay.
'of' indicates a hidden word.
'CAN' can be found hidden inside 'pecan nuts'.
(Other definitions for can that I've seen before include "May" , "Preserve fruit" , "let go in the US" , "depth charge" , "prison" .)