A Gulf
- A hollow place in the earth; an abyss; a deep chasm or basin.
- (obsolete) That which swallows; the gullet.
- That which swallows irretrievably; a whirlpool; a sucking eddy.
- (geography) A portion of an ocean or sea extending into the land; a partially landlocked sea Gulf - Wikipedia
the Gulf of Mexico the Persian Gulf
- (mining) A large deposit of ore in a lode.
- (figuratively) A wide interval or gap; a separating space.
- (figuratively) A difference, especially a large difference, between groups.
- (Oxbridge slang) The bottom part of a list of those awarded a degree, for those who have only just passed.