Cryptic crossword clue
Goods taking up time in big towns? They come in 20s 7

The most common and most likely answer to this crossword clue is the 7 letter word CIGGIES

I've seen this crossword clue in Financial Times
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Buddy explains!

The straight part
We know that "They come in 20s" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case they come in 20s = ciggies.
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 CIGGIES mean?

CIGGIES noun
  1. Cigarette
CIGGIES noun
  1. A cigarette.

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