US comedian born David Adkins whose roles have included Myron Larabee in 1996 family film Jingle All the Way (6)

(Other definitions for sinbad that I've seen before include "Legendary mariner noted for seven voyages" , "Adventurous sailor of Arabian Nights or pantomime" , "Legendary sailor from Arabian nights" , "Pantomime sailor from the Arabian Nights (6)" , "Sailor of The thousand-and-one Nights" .)