Crossword Genius

A number of thieves (5)

Ross

I believe the answer is:

forty

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

'a number' is the definition.
(forty is a kind of number)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for forty that I've seen before include "number of penitential days" , "Kip" , "When life begins" , "-- winks, a short sleep" , "Two-score" .)

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.