What the craftsman uses, as well as a learner (4)
I believe the answer is:
tool
'what the craftsman' is the definition.
I can't tell whether this defines the answer.
'as well as a learner' is the wordplay.
'as well as' becomes 'too' (I've seen this in another clue).
'a learner' becomes 'l' (as in a learner driver with L-plates on their car).
'too'+'l'='TOOL'
'uses' is the link.
Can you help me to learn more?
(Other definitions for tool that I've seen before include "Person used by another" , "Device, implement" , "Gun" , "Person exploited" , "Working instrument" .)