Meeting turns out to be full (7)
I believe the answer is:
teeming
'be full' is the definition.
('teeming' can be similar in meaning to 'full')
'meeting turns out' is the wordplay.
'turns out' indicates an anagram.
'meeting' is an anagram of 'TEEMING'.
'to' acts as a link.
(Other definitions for teeming that I've seen before include "Swarming in to meeting" , "Full of, abounding in" , "Alive" , "Full of people" , "(Of rain) falling heavily" .)