Crossword Genius

Another business function fed by sandwich shop (8)

Ross

I believe the answer is:

sideline

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

'another business' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

'function fed by sandwich shop' is the wordplay.
'function' becomes 'sine' (mathematical function).
'fed by' means one lot of letters goes inside another (one word is fed by another set of letters).
'sandwich shop' becomes 'deli' (short for delicatessen).
'sine' enclosing 'deli' is 'SIDELINE'.

Can you help me to learn more?

(Other definitions for sideline that I've seen before include "Boundary marker" , "hobby" , "Secondary job" , "Prevent from participating" , "not my main interest" .)

I've seen this clue in The Independent.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.