Back vent
(in plumbing) a vent situated on the sewer side of a trap.
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- Back wages
noun see back pay historical examples he hinted that if he could get his back wages he did not care what became of the boat. the yazoo mystery irving craddock his clothes, save what were upon him, had descended to his man-servant for back wages. the voice of the city o. henry he insists that […]
- Back walkover
see under walkover (def 4). racing. a walking or trotting over the course by a contestant who is the only starter. an unopposed or easy victory. any task easily done. gymnastics. a vertical rotation of the body from a standing position, performed by leaning forward to a brief handstand and bringing the legs over and […]
- Backwash
nautical. water thrown backward by the motion of oars, propellers, paddle wheels, etc. aeronautics. the portion of the wash of an aircraft that flows to the rear, usually created by the power plant. compare wash (def 31). a condition, usually undesirable, that continues long after the event which caused it. to affect, as by hitting, […]
- Back water
the rear part of the human body, extending from the neck to the lower end of the spine. the part of the body of animals corresponding to the human back. the rear portion of any part of the body: the back of the head. the whole body, with reference to clothing: the clothes on his […]
- Backwater valve
a valve for preventing flowing liquid, as sewage, from reversing its direction.