One takes long time in cutter (7)
I believe the answer is:
machete
'cutter' is the definition.
(I've seen this before)
'one takes long time' is the wordplay.
'one' becomes 'me' (a setter might use 'one' to humourously mean 'me').
'takes' is an insertion indicator.
'long' becomes 'ache' (to long for something is to ache for it).
'time' becomes 't' (abbreviation).
'ache'+'t'='achet'
'me' enclosing 'achet' is 'MACHETE'.
'in' is the link.
(Other definitions for machete that I've seen before include "hacker" , "A heavy-duty jungle knife" , "Jungle blade" , "Knife for hacking" , "cutter" .)