Joined me for a little tea (3)
I believe the answer is:
met
'joined' is the definition.
(meeting is a kind of joining)
'me for a little tea' is the wordplay.
'for' is a charade indicator (letters next to each other).
'a little' indicates taking the first letters.
The initial letter of 'tea' is 't'.
'me'+'t'='MET'
(Other definitions for met that I've seen before include "Got together" , "London police (abbr) - New York Museum of Art (abbr)" , "Bumped into" , "Encountered, came into contact" , "satisfied" .)