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pipe sleeve[′pīp ‚slēv]
A hollow, cylindrical insert placed in a form for a concrete wall at the position where a pipe is to penetrate in order to prevent flow of concrete into the opening.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
1. A cylindrical insert, placed in a form for a concrete wall, in a location where a pipe is to pierce the wall; the insert prevents concrete from flowing into the cylindrical opening.
2. A pipe coupling.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.