Craft Centre occupied by a criminal case (7)
I believe the answer is:
coracle
'craft' is the definition.
(coracle is a kind of craft)
'centre occupied by a criminal case' is the wordplay.
'centre' becomes 'core' (core can mean something's centre).
'occupied by' means one lot of letters goes inside another (inserted letters occupy or enter the word).
'case' says to hollow out the word (remove centre letters).
'criminal' with its centre removed is 'cl'.
'a'+'cl'='acl'
'core' going around 'acl' is 'CORACLE'.
(Other definitions for coracle that I've seen before include "Small round boat of hides stretched over a wicker frame" , "Small rounded boat" , "See boat" , "Small paddled boat" , "craft" .)