Small, but maybe of some prominence? (5)

I believe the answer is:

minor

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

'small' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

(Other definitions for minor that I've seen before include "Under-age or of little importance" , "One hasn't reached legal majority" , "Insignificant" , "Trivial" , "Smaller - child" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app