dumbwaiter

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dumbwaiter

[′dəm‚wād·ər]
(mechanical engineering)
An industrial elevator which carries small objects but is not permitted to carry people.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

dumbwaiter

A hoisting and lowering mechanism within a building equipped with a relatively small car which moves in a vertical direction (in guides); used exclusively for carrying materials.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.