Latin type of wave (7)
I believe the answer is:
mexican
'latin' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for mexican that I've seen before include "Latin" , "A central American" , "From Chihuahua, perhaps" , "From Guadalajara or Acapulco?" .)