Ring Michael when Al has gone out (5)

I believe the answer is:

chime

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

'ring' is the definition.
(eg a bell chimes or rings)

I don't understand how the rest of the clue works.

(Other definitions for chime that I've seen before include "Ringing sound" , "(Of clock) strike" , "Sound of bell - agree" , "Harmonise, peal" , "Melodious bell sound" .)

I've seen this clue in the Evening Standard.

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