"Though his barque cannot be lost, / Yet it shall be ____-tossed” (First Witch, Macbeth) (7)
I believe the answer is:
tempest
(Other definitions for tempest that I've seen before include "An angry storm as in Shakespeare play" , "Met pets in fierce storm" , "Shakespeare play with storm scene" , "Shakespearean storm?" , "Violent windstorm" .)