trench

In fact, trenching in urban areas to install pipelines these days is for the birds.

Another option is to excavate a deep trench and fill it with grout, concrete, or a slurry of impermeable clay.

It consists of long narrow trenches that only make up around 0.25% of the oceans, and are among the most extreme environments on Earth.

Until we reach the final slope, a trench inside the larger Mariana Trench with gently-sloping sides that enframe a valley about 1.6 kilometers wide.

Above a certain depth, you need to lay back the slopes of the trench to avoid having it collapse.

We ended up getting two Burberry trench coats.

Drawing a straight line between points A and B is easy, but digging a trench this deep to install the pipe, or worse, tunneling it, is not an inexpensive endeavor.

These are the sort of people you want in the prison cell or on the way to the scaffold, in the trenches or the bed next to you on the cancer ward.