The most common and most likely answer to this crossword clue is the 7 letter word BUNCHES
I've seen this crossword clue in Independent
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More clues leading to the result BUNCHES
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The straight part
We know that "Sets of keys/locks arrangement?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sets of keys/locks arrangement? = bunches.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 BUNCHES mean?
BUNCHES noun- A group of similar things, either growing together, or in a cluster or clump, usually fastened together.
- The peloton; the main group of riders formed during a race.
- An informal body of friends.
- A considerable amount.
- An unmentioned amount; a number.
- A group of logs tied together for skidding.
- An unusual concentration of ore in a lode or a small, discontinuous occurrence or patch of ore in the wallrock.
- The reserve yarn on the filling bobbin to allow continuous weaving between the time of indication from the midget feeler until a new bobbin is put in the shuttle.
- An unfinished cigar, before the wrapper leaf is added.
- A protuberance; a hunch; a knob or lump; a hump.
- To gather into a bunch.
- To gather fabric into folds.
- To form a bunch.
- To be gathered together in folds
- To protrude or swell
- Hair gathered together in two or more parts; pigtails.