in masonry construction, any of the horizontal, wood or metal pieces which support the floor planks of a scaffold and which are themselves supported at one end in holes left temporarily in a wall under construction
Origin of putlogaltered (? influenced, influence by log) from earlier putlock from uncertain or unknown; perhaps put + lock
One of the short pieces of lumber supporting the floor of a scaffold.
Origin of putlogAlteration (influenced by log 1) of obsolete putlock perhaps put lock 1