The most common and most likely answer to this crossword clue is the 4 letter word GULF
I've seen this crossword clue in The Daily Telegraph
G
U
L
F
More clues leading to the result GULF
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GULF mean?
GULF noun- A hollow place in the earth; an abyss; a deep chasm or basin.
- That which swallows; the gullet.
- That which swallows irretrievably; a whirlpool; a sucking eddy.
- A portion of an ocean or sea extending into the land; a partially landlocked sea
- A large deposit of ore in a lode.
- 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.
- (Oxbridge slang) To award a degree to somebody who has only just passed sufficiently.