Meeting some swans we ringed (9)
I believe the answer is:
answering
'meeting' is the definition.
(answering is a kind of meeting)
'some swans we ringed' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'ANSWERING' is hidden in the letters of 'swans we ringed'.
(Other definitions for answering that I've seen before include "Responding" , "Replying" , "Acknowledging" , "Picking up receiver" .)