Novice always has jemmy (5)
I believe the answer is:
lever
'jemmy' is the definition.
(I've seen this before)
'novice always' is the wordplay.
'novice' becomes 'l' (abbreviation for Learner e.g. on UK cars**).
'always' becomes 'ever' ('ever' can be a synonym of 'always').
'l'+'ever'='LEVER'
'has' acts as a link.
(Other definitions for lever that I've seen before include "Heavy bar" , "Lifting device to revel in" , "Pivoting bar, handle" , "Rod" , "Bar turning on a fulcrum" .)