backhoe
An excavating machine for cutting trenches; a boom-mounted bucket moves toward the machine, cutting the ground like a hoe; then the machine turns away from the cut to permit the …
Category: Pic
backflow preventer
A device used to prevent water (or other liquids) from being siphoned into a potable water system.
backsaw
A saw having a metal strip along its back to stiffen it; has many small teeth for fine, accurate sawing, as for miters.
backband
A piece of millwork used around a rectangular window or door casing to cover the gap between the casing and the wall or as a decorative feature. Also called a backbend.