sprag

• Substantivo que designa uma cunha ou calço colocado sob uma roda ou entre os raios para impedir que um veículo se mova, ou um poste de madeira usado como escora para sustentar o teto de uma mina.

A noun referring to a chock or bar wedged under a wheel or between spokes to prevent a vehicle from rolling, or a wooden prop used to support a mine roof.

1. Wheel chockC1formal

   A chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline.

   Calço de roda

   • The driver placed a sprag under the truck's wheel before unloading.
   • He used a wooden sprag to keep the cart from moving on the hill.
   • Always secure a sprag when parking on a steep slope.

   Sinônimosblockchockscotchstopwedge

2. Mine supportC1formal

   A wooden prop used to support the roof of a mine.

   Escora de mina

   • The miners installed a sprag to reinforce the tunnel ceiling.
   • A broken sprag can cause a dangerous collapse underground.
   • They replaced the old sprag with a new timber support.

   Sinônimospropstaysupport