Dummy /(?)/

1. Silent; mute; noiseless; as a dummy engine.
2. Fictitious or sham; feigned; as, a dummy watch.

pl. Dummies

1. One who is dumb.
2. A sham package in a shop, or one which does not contain what its exterior indicates.
3. An imitation or copy of something, to be used as a substitute; a model; a lay figure; as, a figure on which clothing is exhibited in shop windows; a blank paper copy used to show the size of the future book, etc.
4. One who plays a merely nominal part in any action; a sham character. (Drama)
5. An ignorant or thick-witted person; a foolish person; a dolt.
6. A locomotive with condensing engines, and, hence, without the noise of escaping steam; also, a dummy car. (Railroad)
7. The fourth or exposed hand when three persons play at a four-handed game of cards. (Card Playing)
8. A floating barge connected with a pier.