Crossword Genius

Part of hand and arm that woodworker uses? (4,3)

Ross

I believe the answer is:

nail gun

I'm a little stuck... Click here to teach me more about this clue!

'arm that woodworker uses?' is the definition.
I know nothing about this answer so I can't tell whether this works.

'part of hand and' is the wordplay.
'part' becomes 'nail' (nail is a kind of part).
'of hand' becomes 'gu' (I can't justify this - if you can you should believe this answer much more).
'and' becomes 'n' (common abbreviation for 'and').
'nail'+'gu'+'n'='NAIL GUN'

Can you help me to learn more?

(Other definitions for nail gun that I've seen before include "Fixing tool" , "In a lung (anag.)" , "Woodworking tool" .)

I've seen this clue in The Telegraph.
Want a hint initially instead of a full solution? Install my app