Taken for tea? (3)

I believe the answer is:
ate
'taken' is the definition.
(eating is a kind of taking)
'tea?' is the wordplay.
'tea' can be anagrammed to 'ATE'.
But, I'm not clear how the anagram is indicated.
'for' is the link.
Can you help me to learn more?
(Other definitions for ate that I've seen before include "Devoured" , "Ingested" , "included in one's diet" , "Took food" , "upset > Greek goddess" .)
