The most common and most likely answer to this crossword clue is the 9 letter word IMPERIALS
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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 IMPERIALS mean?
IMPERIALS noun- A bottle of wine (usually Bordeaux) containing 6 liters of fluid, eight times the volume of a standard bottle.
- A writing paper size measuring 30 × 22 inches, or printing paper measuring 32 × 22 inches.
- A card game differing from piquet in some minor details, and in having a trump.
- Any of several combinations of cards which score in this game.
- A crown imperial.
- A tuft of hair on the lower lip (so called from its use by Napoleon III).
- A kind of dome, as in Moorish buildings.
- An outside seat on a diligence.
- A variety of green tea.