Air hole a tile was moved to create (9)
I believe the answer is:
ventilate
'to create' is the definition.
(I know that ventilate is a more specific form of regenerate)
'air hole a tile was moved' is the wordplay.
I cannot quite see how this works, but
'air' could be 'vent' (both can mean to express or reveal) and 'vent' is present in the answer.
'a' is found in the answer.
an anagram of 'tile' is 'ilte' which is located in the remaining letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ventilate that I've seen before include "Superficial" , "Expose to a current of fresh air" , "Allow fresh air to circulate" , "Fan" , "Let air enter and circulate" .)