"Roots" actress Cicely (5)
I believe the answer is:
tyson
(Other definitions for tyson that I've seen before include "Undisputed world heavyweight champion, 1987" , "Youngest ever undisputed world heavyweight boxing champion, b, 1966" , "US world heavyweight boxing champion, b.1966 -- English fast bowler, d. 2015" , "Mike ..., former US prizefighter" , "Mike --, US boxer" .)