anchor ring

noun

, Geometry Now Rare.

1. torus ( def 2a ).

anchor ring

noun

1. a ring made from an iron bar of circular cross-section

Word History and Origins

Origin of anchor ring¹

First recorded in 1860–65

Example Sentences

Instead it may be like maps—you can’t use a single map to describe the surface of the earth or an anchor ring: you need at least two maps in the case of the earth and four for the anchor ring to cover every point.

From Literature

He now let go this third anchor, taking care to fasten the cable to a rope, one end of which was slung through the anchor ring, while the other was attached to the windlass of the sloop.

From Project Gutenberg

At the end of the third anchor tube, and comparatively near the ship, was the dump—a conglomeration of equipment, used and unused booster rocket cases, oddments of all sorts, some to be installed aboard the wheel, others to be used as building components of other projects; and some oddments of materials that no one could have given a logical reason for keeping at all except that they "might be useful"—all held loosely together by short guidelines to an anchor ring at the tube's end.

From Project Gutenberg

Around this south polar hub-lock, which would rotate with the wheel, was the stationary anchor ring on which rode free both the stat-walk and the anchor tubes for the smaller satellites that served as distant components of the mother ship.

From Project Gutenberg

It passed over our heads at a height no greater than ten thousand feet, if as great as that, and we could see that it was a cylindrical ring like a doughnut or an anchor ring, constructed, I believe, of highly polished metal, the inner aperture being about twenty-five yards in diameter.

From Project Gutenberg