Meanings of the word dummy/dummies:
dummy (as in “mute”) n. : a person who does not talk
dummy (as in “dumbbell”) n. : an ignorant or foolish person
dummy (as in “figure”) n. : a figure representing the human form
dummy (as in “blank”) n. : a cartridge containing an explosive charge but no bullet
dummy (as in “produce”) v. : make a dummy of; “dummy up the books that are to be published”
dummy (as in “dummy”) adj. : having the appearance of being real but lacking capacity to function; “a dummy corporation”