Noun

(en noun)

(astronomy) The point in the sky vertically above a given position or observer; the point in the celestial sphere opposite the nadir.

* 1638 Herbert, Sir Thomas Some years travels into divers parts of Asia and Afrique

The 12 day wee had the wind high and large ?o that in two dayes ?aile we made the Sunne our Zenith or verticall point...

* 1671–1693 : Rev. Thomas Jolly, private notebook ; printed in:

* 1895 , Henry Fishwick (editor), The Note Book of the Rev. Thomas Jolly: A.D. 1671–1693. Extracts from the Church Books of Altham and Wymondhouses, 1649–1725. And an Account of the Jolly Family of Standish, Gorton, and Altham , page 44

In this 10th m. appeared that prodigious Comett the tayl whereof was like the blade of a double edged sword, and reached almost from the horizon to the zenith .

(astronomy) The highest point in the sky reached by a celestial body.

* 1719-

...in the middle of the day, when the sun was in the zenith , the violence of the heat was too great to stir out...

* 1920 , , The Understanding Heart , Chapter II:

As far to the west as Monica could see, her world was a sea of fog, , the fog gradually took on a bluish tinge.

Highest point or state; peak.

* Shakespeare

I find my zenith doth depend upon / A most auspicious star.

* Macaulay

It was during those civil troubles this aspiring family reached the zenith .

* {{quote-book

, page=173 , year=1900 , author=William Beckford , title=The History of the Caliph Vathek citation , passage="There for a while I enjoyed myself in the zenith of glory and pleasure."}}

Noun

(en noun)

A long, narrow container, open on top, for feeding or watering animals.

One of Hank's chores was to slop the pigs' trough each morning and evening.

Any similarly shaped container.

# (Australia, New Zealand) A rectangular container used for washing or rinsing clothes.

Ernest threw his paint brushes into a kind of trough he had fashioned from sheet metal that he kept in the sink.

A short, narrow canal designed to hold water until it drains or evaporates.

There was a small trough that the sump pump emptied into; it was filled with mosquito larvae.

(Canada) A gutter under the eaves of a building; an eaves trough.

The troughs were filled with leaves and needed clearing.

(agriculture, Australia, New Zealand) A channel for conveying water or other farm liquids (such as milk) from place to place by gravity; any ‘U’ or ‘V’ cross-sectioned irrigation channel.

A long, narrow depression between waves or ridges; the low portion of a wave cycle.

The buoy bobbed between the crests and troughs of the waves moving across the bay.

The neurologist pointed to a troubling trough in the pattern of his brain-waves.

(meteorology) A linear atmospheric depression associated with a weather front.