Like flat battery on the house! (4,2,6)
I believe the answer is:
free of charge
'on the house' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for free of charge that I've seen before include "On the house" , "Gratis" .)
I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution?
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