sawhorse

noun

1. A structure with a crosspiece used to support timber or other material for working.

   “The sit-in Monday began around 9 a.m. after a spirited march through the financial district […] Though police had set up sawhorses at all five entrances to the Stock Exchange, women sat down in the pathways left open by police and attempted to talk with stock traders and others as they stepped over, or pushed through, blockaders.”