Could you use her in the office on Friday? (4)
I believe the answer is:
girl
'friday?' is the definition.
(I've seen this in another clue)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for girl that I've seen before include "One of 8 [LASSES]" , "Miss" , "Maid" , "Young lady" , "See 5" .)