Rear lights we hear (5)
I believe the answer is:
raise
'rear' is the definition.
(I know that rear can be written as raise)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for raise that I've seen before include "cairn" , "Amplify" , "Increased earnings in America" , "Care for during childhood" , "Heighten" .)