The most common and most likely answer to this crossword clue is the 7 letter word MACHINE
I've seen this crossword clue in The Guardian
M
A
C
H
I
N
E
More clues leading to the result MACHINE
- Appliance repaired in Cheam
- A line became hard to sort out, as only fit for computer input?
- Armed man’s outstanding feature, say, aristocratic in bearing
- Equipment to slice nice ham
- When there’s a loud boom, I must replace old device
- Appliance companion found in a state
- Speed of sound: nothing going for current engine
- Robotic person, prominent feature in West?
- Held in stomach in exiting contraption
- Vehicle travelling at the speed of sound to the Sunderland area
Buddy explains!

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 MACHINE mean?
MACHINE noun- A device that directs and controls energy, often in the form of movement or electricity, to produce a certain effect.
- A vehicle operated mechanically, such as an automobile or an airplane.
- (abbreviation) An answering machine or, by extension, voice mail.
- A computer.
- A person or organisation that seemingly acts like a machine, being particularly efficient, single-minded, or unemotional.
- Especially, the group that controls a political or similar organization; a combination of persons acting together for a common purpose, with the agencies which they use.
- Supernatural agency in a poem, or a superhuman being introduced to perform some exploit.
- The system of special interest groups that supports a political party, especially in urban areas.
- Penis.
- A contrivance in the Ancient Greek theatre for indicating a change of scene, by means of which a god might cross the stage or deliver a divine message; the deus ex machina.
- A bathing machine.
- To make by machinery.
- To shape or finish by machinery.