Letter in Greek about a dance (7)
I believe the answer is:
lambada
'dance' is the definition.
(Brazilian dance)
'letter in greek about a' is the wordplay.
I cannot quite see how this works, but
'letter' could be 'm' and 'm' is found in the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is located in the answer.
'a' is within 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 lambada that I've seen before include "Fast Brazilian dance - mad Baal (anag)" , "dance in South America" , "few steps?" , "sexy dance" , "Lively Brazilian dance" .)