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A device inserted in a pipe or hole for purposes such as cleaning or for detonating an explosive.
A sled for moving logs or cultivating.
A large rake for gathering hay.
A small railroad car used for transporting workers and materials.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A device used to clean a pipeline by placing it at the pump end of the pipeline and forcing it through the pipe by water pressure.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.