back-flow

And then for drains, toilets and other sewer connectors, you want to install something like back-flow valves or plugs to prevent floodwaters from getting into your home.

CNN Transcript Jun 19, 2008 2008

No such thing as a back-flow of ideas exists any more than there exists

Les Miserables 2008

Though so near the metropolis, Noonoon was less in touch with it than many western towns, -- in most respects was a veritable great-grandmother for stagnation and bucolic rusticity, and in individuality suggested one of the little quiet eddies near the emptying of a stream, and which, being called into existence by a back-flow, contains no current.

Some Everyday Folk and Dawn Miles Franklin 1916

No valves occur in the opening of the superior cavae but an imperfect one, the Eustachian valve, protects the inferior cava; the direction of the heart's contraction prevents any excessive back-flow into the veins, and the onward, tendency is encouraged by the suck of the diastole of the ventricles.

Text Book of Biology, Part 1: Vertebrata 1906

The hilly but well-metaled cartroad, along which by the light of the waning moon I cantered with an officer of the Greek staff, had been thronged all night with the surging current of the battle traffic -- an up-flow of munition convoys and reinforcements, and back-flow of wounded and prisoners -- but I could not help remarking the comparative quiet and absence of confusion with which the complex movement was carried on.

World's War Events $v Volume 3 Beginning with the departure of the first American destroyers for service abroad in April, 1917, and closing with the treaties of peace in 1919. 1902

The beavers had, in times gone by, built a large dam at this place across the creek, which must have produced a great back-flow and made a regular little lake in the times of freshets.

II. Waferfowl 1885

No such thing as a back-flow of ideas exists any more than there exists a return of a river on its course.

Les Miserables, Volume IV, Saint Denis 1862

No such thing as a back-flow of ideas exists any more than there exists

Les Misérables Victor Hugo 1843

Barrett is proposing to join forces with the Milwaukee Metropolitan Sewerage District to inspect sewer laterals, then design an experimental program to help homeowners fix the laterals, install back-flow prevention valves and repair floor drains.

JSOnline.com 2010

They all had basements that were below the sewer line, and the homes do not have back-flow preventers.

JSOnline.com 2010