Angry glower from a little friar (5)

I believe the answer is:

riled

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

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

'glower from a little friar' is the wordplay.
I cannot quite understand how this works, but
'glower' could be 'led' (I've seen this in other clues) and 'led' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for riled that I've seen before include "Nettled" , "Cross" , "Vexed" , "Annoyed" , "Made angry" .)

I've seen this clue in The Daily Express.

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.