Caught everybody in ring (4)
I believe the answer is:
call
'ring' is the definition.
(I know that ring can be written as call)
'caught everybody' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'everybody' becomes 'all' (I've seen this before).
'c'+'all'='CALL'
'in' is the link.
(Other definitions for call that I've seen before include "Summon; shout" , "Visit; telephone" , "Assign a name to" , "Telephone - give a name" , "Summon, ring" .)