Wildly shout a direction (5)
I believe the answer is:
south
'a direction' is the definition.
(compass direction)
'wildly shout' is the wordplay.
'wildly' indicates anagramming the letters.
'shout' with letters rearranged gives 'SOUTH'.
(Other definitions for south that I've seen before include "Direction to the right of sunrise" , "Down on a map" , "Cardinal point" , "Card player" , "1949 musical by Rodgers and Hammerstein, made into a film in 1958" .)