Crossword Genius

Imprisoned those who could all be on strike? (6)

Ross

I believe the answer is:

inside

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

'imprisoned' is the definition.
(I know that imprisoned can be written as inside)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for inside that I've seen before include "Inner surface" , "A sort of job" , "serving porridge" , "undercover" , "Interior - in prison" .)

I've seen this clue in The Times.
Want a hint initially instead of a full solution? Install my app