01 n. A hollow place in the earth; an abyss; a deep chasm or basin,
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1.
A hollow place in the earth; an abyss; a deep chasm or basin,“He then surveyed Hell and the gulf between.” — Milton.“Between us and you there is a great gulf fixed.” — Luke xvi. 26.
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2.
That which swallows; the gullet.[Obs.]
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3.
That which swallows irretrievably; a whirlpool; a sucking eddy.“A gulf of ruin, swallowing gold.” — Tennyson.
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4.
A portion of an ocean or sea extending into the land; a partially land-locked sea; as, the Gulf of Mexico.(Geog.)
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5.
A large deposit of ore in a lode.(Mining)
Phrases & compounds
Gulf Stream —
the warm ocean current of the North Atlantic.
Gulf weed —
a branching seaweed (Sargassum bacciferum, or sea grape), having numerous berrylike air vessels, -- found in the Gulf Stream, in the Sargasso Sea, and elsewhere.