The most common and most likely answer to this crossword clue is the 6 letter word DEVICE
I've seen this crossword clue in Independent
D
E
V
I
C
E
More clues leading to the result DEVICE
- Remove frost around head of vital instrument
- Plan to make second-in-command third-in-command?
- Plan to expurgate immorality?
- Instrument of French iniquity
- Scheme woman has to snare man
- Emblem of French depravity
- Plan by democrat initially exposed illegal activity
- Plan to cut work by half — it's a crime
- Plan reflects reporter's shortcoming
- Plan six hundred Scottish river bridges
Buddy explains!

The straight part
We know that "instrument" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case instrument = device.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 DEVICE mean?
DEVICE noun- Any piece of equipment made for a particular purpose, especially a mechanical or electrical one.
- A peripheral device; an item of hardware.
- A project or scheme, often designed to deceive; a stratagem; an artifice.
- An improvised explosive device, home-made bomb
- A technique that an author or speaker uses to evoke an emotional response in the audience; a rhetorical device.
- A motto, emblem, or other mark used to distinguish the bearer from others. A device differs from a badge or cognizance primarily because as it is a personal distinction, and not a badge borne by members of the same house successively.
- Power of devising; invention; contrivance.
- An image used in whole or in part as a trademark or service mark.
- An image or logo denoting official or proprietary authority or provenience.
- A spectacle or show.
- Opinion; decision.