Cryptic crossword clue
Sailors demolished angostura 9

The most common and most likely answer to this crossword clue is the 9 letter word ARGONAUTS

I've seen this crossword clue in The Guardian
A
R
G
O
N
A
U
T
S

Buddy explains!

The straight part
We know that "Sailors" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sailors = argonauts.
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 ARGONAUTS mean?

ARGONAUTS noun
  1. Any of several species of shelled octopods of the family Argonautidae (of which only the genus Argonauta is not extinct).
  2. An adventurer on a dangerous but rewarding quest.

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