Crossword Genius

Joiner employed in B&Q (9)

Ross

I believe the answer is:

ampersand

'joiner' is the definition.
(the 'and' symbol - something which joins things)

I don't understand the rest of the clue.

(Other definitions for ampersand that I've seen before include "Character representing "and"" , "that is seen at the keyboard" , "Plus sign" , "character (sharing with 7)" , "It connects" .)

I've seen this clue in The Guardian.
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