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Related to dog iron: Horse iron
dog iron[′dȯg ‚ī·ərn]
A short iron bar with ends bent at right angles.
An iron pin that can be inserted in stone or timber in order to lift it.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
dog iron, dog anchor
A short bar of iron with its ends bent at right angles and pointed so as to hold together the two pieces into which they are driven.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.