Meander and chatter in turn? That’ll be me! (7)
I believe the answer is:
windbag
'that'll be me' is the definition.
The definition suggests a singular noun which matches the answer.
'meander and chatter in turn?' is the wordplay.
'meander' becomes 'wind' ('wind' can be a synonym of 'meander').
'and' means one lot of letters go next to another.
'chatter in' becomes 'gab' (I've seen this before. I am not sure about the 'in' bit.**).
'turn?' shows that the letters should be reversed in order (I've seen 'turning' mean this).
'gab' back-to-front is 'bag'.
'wind'+'bag'='WINDBAG'
Can you help me to learn more?
(Other definitions for windbag that I've seen before include "outlet for gas" , "One spouting hot air" , "Talkative bore" , "Tedious speaker" , "Person who talks lengthily and boastfully" .)