Noun

(en noun)

A hollow place in the earth; an abyss; a deep chasm or basin.

* Milton

He then surveyed / Hell and the gulf between.

* Bible, Luke xvi. 26

Between us and you there is a great gulf fixed.

(obsolete) That which swallows; the gullet.

* 1606 , , IV. i. 23:

Witch's mummy, maw and gulf / Of the ravined salt sea shark,

That which swallows irretrievably; a whirlpool; a sucking eddy.

* Tennyson

a gulf of ruin, swallowing gold

(geography) A portion of an ocean or sea extending into the land; a partially landlocked sea; as, the Gulf of Mexico or Persian Gulf.

(mining) A large deposit of ore in a lode.

A difference, especially a large difference, between groups

* {{quote-news

, year=2012 , date=September 7 , author=Phil McNulty , title=Moldova 0-5 England , work=BBC Sport citation , page= , passage=England were graphically illustrating the huge gulf in class between the sides and it was no surprise when Lampard added the second just before the half hour. Steven Gerrard found his Liverpool team-mate Glen Johnson and Lampard arrived in the area with perfect timing to glide a header beyond Namasco.}}

Noun

(wikipedia ridge) (en noun)

(lb) The back of any animal; especially the upper or projecting part of the back of a quadruped.

:(Hudibras)

Any extended protuberance; a projecting line or strip.

The line along which two sloping surfaces meet which diverge towards the ground.

*

*:It was not far from the house; but the ground sank into a depression there, and the ridge of it behind shut out everything except just the roof of the tallest hayrick. As one sat on the sward behind the elm, with the back turned on the rick and nothing in front but the tall elms and the oaks in the other hedge, it was quite easy to fancy it the verge of the prairie with the backwoods close by.

The highest point on a roof, represented by a horizontal line where two roof areas intersect, running the length of the area.

*{{quote-book, year=1907, author=

, chapter=26, title= The Dust of Conflict , passage=Maccario, it was evident, did not care to take the risk of blundering upon a picket, and a man led them by twisting paths until at last the hacienda rose blackly before them. Appleby could see it dimly, a blur of shadowy buildings with the ridge of roof parapet alone cutting hard and sharp against the clearing sky.}}

(lb) The highest portion of the glacis proceeding from the salient angle of the covered way.

:(Stocqueler)

A chain of mountains.

*(William Shakespeare) (1564-1616)

*:the frozen ridges of the Alps

A chain of hills.

A long narrow elevation on an ocean bottom.

(lb) A type of warm air that comes down on to land from mountains.