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 (po͝ot′lôg′, -lŏg′, pŭt′-)
One of the short pieces of lumber supporting the floor of a scaffold.

[Alteration (influenced by log) of obsolete putlock : perhaps put + lock.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈpʌtˌlɒɡ) or


(Building) a short horizontal beam that with others supports the floor planks of a scaffold
[C17: changed (through influence of log1) from earlier putlock, probably from put (past participle) +lock1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
60 x 50 couplers, 90-degree couplers, full swivel couplers, girder couplers, half swivel couplers, and putlog couplers are some of the coupler types that are offered by South End Scaffolding.
LEDGER: a horizontal timber secured to the uprights of scaffolding to support the putlog
The town square remains a distillation of ideal Italian life, with cafes, restaurants and a tiny opera house, and on the other side, the little Gothic cathedral with its tough brick walls regularly patterned by putlog holes that are now noisy and white-bearded nesting boxes for pigeons.