Appreciative audience member showing tongue (7)
I believe the answer is:
clapper
'appreciative' is the definition.
(I've seen this before)
'audience member showing tongue' is the wordplay.
I cannot quite see how this works, but
'member' could be 'lap' (lap is a kind of member) and 'lap' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for clapper that I've seen before include "person giving a hand" , "Appreciative sort" , "Bell's tongue" , "part of the "Ring Cycle"?" , "The tongue or striker of a bell" .)