Cosy up with German husband — his business is in pieces? (8)

I believe the answer is:

gunsmith

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'his business is in pieces?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'cosy up with german husband' is the wordplay.
'cosy' becomes 'snug' (synonyms).
'up' says the letters should be written in reverse (in down clue: letters go upwards).
'with german' becomes 'mit'.
'husband' becomes 'h'.
'snug' backwards is 'guns'.
'guns'+'mit'+'h'='GUNSMITH'

Can you help me to learn more?

(Other definitions for gunsmith that I've seen before include "Firearms maker/dealer" , "One makes or sells small firearms" , "Maker of firearms" , "Thin mugs (anag.)" , "Arms maker" .)

I've seen this clue in The Times.

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