The most common and most likely answer to this crossword clue is the 7 letter word SLIPPER
I've seen this crossword clue in Financial Times
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More clues leading to the result SLIPPER
- Mule as one coming a cropper in mud?
- Drinker nicking left shoe
- There’s no end of unstable footwear
- Small cheek on a mule
- Footwear for each fielder takes precedence
- Mule‘s small limb
- Item of footwear, skate perhaps?
- Footwear used by ballerina who falls?
- . He wouldn't remain in a dancing shoe
- Mule's small limb
Buddy explains!

The straight part
We know that "shoe" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case shoe = slipper.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 SLIPPER mean?
SLIPPER noun- A low soft shoe that can be slipped on and off easily.
- Such a shoe intended for indoor use; a bedroom or house slipper.
- A flip-flop (type of rubber sandal).
- A person who slips.
- A kind of apron or pinafore for children.
- A kind of brake or shoe for a wagon wheel.
- A piece, usually a plate, applied to a sliding piece, to receive wear and permit adjustment; a gib.
- A form of corporal punishment where the buttocks are repeatedly struck with a plimsoll; "the slipper".
- The plimsoll or gym shoe used in this form of punishment.
- To spank with a plimsoll as corporal punishment.
- Slippery