The most common and most likely answer to this crossword clue is the 7 letter word ANNULAR
I've seen this crossword clue in The Guardian
A
N
N
U
L
A
R
More clues leading to the result ANNULAR
- Quash right boxing ace in a ring
- Scrap by right boxing area in a ring
- Set aside half of area in the shape of a ring
- Recall artist turning up in a band
- Cancel a run round
- Circular tip removed from delivery tube encountering resistance
- Strike out a blunder, finally, that’s ringed
- Ring-shaped forms unreasonable — not unusually obese
- Cancel a Republican circular
- Fourth finger for a fourth key after Delete?
Buddy explains!

The straight part
We know that "ringed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ringed = annular.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 ANNULAR mean?
ANNULAR adjective- Pertaining to, or having the form of, a ring; ring-shaped; in the shape of an annulus.
- Banded or marked with circles.