Cryptic crossword clue
Feature of some wines, eight swallowed in bar 5,3

The most common and most likely answer to this crossword clue is the 5 plus 3 letter word SCREW TOP

I've seen this crossword clue in The Guardian
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Buddy explains!

The straight part
We know that "Feature of some wines" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case feature of some wines = screw top.
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 SCREW TOP mean?

SCREW TOP noun
  1. A top that can be opened and closed by screwing.

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