Tongue wagging at openers (9)
I believe the answer is:
esperanto
'tongue' is the definition.
(I've seen this before)
'wagging at openers' is the wordplay.
'wagging' is an anagram indicator (I've seen this in other clues).
'at'+'openers'='atopeners'
'atopeners' anagrammed gives 'ESPERANTO'.
(Other definitions for esperanto that I've seen before include "Artificial language invented for international use" , "artificial tongue" , "Ape tenors (anag.)" , "Personate (anag.)" , "words, set up artificially?" .)