Stealing tablet, turn grey (7)
I believe the answer is:
pillage
'stealing' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'tablet turn grey' is the wordplay.
'tablet' becomes 'pill' (synonyms).
'turn grey' becomes 'age' (turning grey is a sign of aging).
'pill'+'age'='PILLAGE'
Can you help me to learn more?
(Other definitions for pillage that I've seen before include "Plunder, sack" , "Rob with violence" , "Violent stealing" , "Loot" , "Sacking" .)