Another helping sixty every minute (7)
I believe the answer is:
seconds
'another helping' is the definition.
(I've seen this in another clue)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for seconds that I've seen before include "Inferior goods" , "Endorses proposal" , "in a minute!" , "in a little while" , "Units of time" .)