Story about empty teapot is mere gossip (6)
I believe the answer is:
tattle
'mere gossip' is the definition.
'tattle' can be an answer for 'gossip' (I've seen this before). I am not sure about the 'mere' bit.
'story about empty teapot' is the wordplay.
'story' becomes 'tale' (synonyms).
'about' means one lot of letters goes inside another.
'empty' suggests removing the centre.
'teapot' with its middle taken out is 'tt'.
'tale' going around 'tt' is 'TATTLE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for tattle that I've seen before include "Gossip, idle chatter" , "Tell tales" , "Inform on someone" , "Chatter idly" , "'Gossip, idle talk (6)'" .)