The most common and most likely answer to this crossword clue is the 11 letter word RECEPTACLES
I've seen this crossword clue in The Daily Telegraph
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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 RECEPTACLES mean?
RECEPTACLES noun- A container.
- The part of the flower stalk (peduncle or pedicel) to which the floral parts are attached; a thalamus, a torus.
- A structure at the end of a branch of an alga containing conceptacles (reproductive organs).
- An organ that receives and holds a secretion.
- A contact device installed at an outlet for the connection of an attachment plug (typically by receiving the plug's prongs) to supply portable appliances or equipment.