See lambs frolicking get together (8)
I believe the answer is:
assemble
'get together' is the definition.
('assemble' can be a synonym of 'get together')
'see lambs frolicking' is the wordplay.
'frolicking' indicates an anagram.
'see'+'lambs'='seelambs'
'seelambs' anagrammed gives 'ASSEMBLE'.
(Other definitions for assemble that I've seen before include "Bring/come together" , "Gather or collect together" , "Bring or gather together" , "Gather or congregate together" , "Come or bring group together" .)