Rave about a red-headed six-footer? (4)
I believe the answer is:
rant
'rave' is the definition.
(I know that rave can be written as rant)
'about a red-headed six-footer?' is the wordplay.
'about' says the letters should be written in reverse.
'red' becomes 'r' (I've seen this in other clues).
'headed' means to remove the first letter (head can mean to remove the top from something).
'six footer?' becomes 'ant' (an ant has six feet).
'a'+'r'='ar'
'ar' in reverse letter order is 'ra'.
'ant' with its initial letter taken away is 'nt'.
'ra'+'nt'='RANT'
(Other definitions for rant that I've seen before include "Loud and emotional declamation" , "Bombastically declaim" , "Wild speech" , "Angry tirade" , "Show anger" .)