The most common and most likely answer to this crossword clue is the 3 letter word ARC
I've seen this crossword clue in The Times
A
R
C
More clues leading to the result ARC
- Part of circle a churchgoer joined
- Vehicle, about to get submerged in part of turning circle?
- Electrical discharge in large vessel reported
- Part of circular curve
- Curve seen in sugarcane
- Part of circle talking of animal rescue vessel?
- Bow of flood rescue vessel in sound
- No straight line in bar code
- Bender that couples went on in ancient times, it’s said
- Form of current around river bend
Buddy explains!

The straight part
We know that "Part of circle" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of circle = arc.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 ARC mean?
ARC noun- That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon.
- A continuous part of the circumference of a circle (circular arc) or of another curve.
- A curve, in general.
- A band contained within parallel curves, or something of that shape.
- (electrics) A flow of current across an insulating medium; especially a hot, luminous discharge between either two electrodes or as lightning.
- A story arc.
- A continuous mapping from a real interval (typically [0, 1]) into a space.
- A directed edge.
- The three-point line.
- An arclight.
- To move following a curved path.
- To shape into an arc; to hold in the form of an arc.
- To form an electrical arc.