Huck Finn, for one (4)
I believe the answer is:
teen
'huck finn for one' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for teen that I've seen before include "Of 13 to 19 year olds" , "Adolescent (informal)" , "Young person" , "Youngster over twelve" , "Youth" .)