Crossword Genius

They set off to get the books (7)

Ross

I believe the answer is:

primers

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

'books' is the definition.
(primer is a kind of book)

'they set off to get' is the wordplay.
I cannot really see how this works, but
'set' could be 'prime' (priming is a kind of setting) and 'prime' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

'the' acts as a link.

Can you help me to learn more?

(Other definitions for primers that I've seen before include "detonators" , "Introductory books or undercoats" .)

I've seen this clue in the Evening Standard.
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.