Hold crushed tin can, nothing inside (7)
I believe the answer is:
contain
'hold' is the definition.
('contain' can be a synonym of 'hold')
'crushed tin can nothing inside' is the wordplay.
'crushed' indicates an anagram.
'nothing' becomes 'o' (looks like zero - 0).
'inside' indicates putting letters inside.
'tin'+'can'='tincan'
'tincan' anagrammed gives 'cntain'.
'cntain' going around 'o' is 'CONTAIN'.
(Other definitions for contain that I've seen before include "Carry" , "keep within bounds" , "Control, restrain" , "Hold within, suppress (7)" , "I cannot (anag) - hold back" .)