The most common and most likely answer to this crossword clue is the 7 letter word ANNULUS
A
N
N
U
L
U
S
More clues leading to the result ANNULUS
- ...Ring to cancel our party
- Ring American, set aside at first
- Growing every year, adult avoided American doughnut say
- Name repeated in usual wrestling ring
- Ring girl? You will, you confess finally
- Suspend, as above ring
- Ring university lecturer involved in Latin for the year
- Ring girl that’s texted you with unending desire
Buddy explains!

The straight part
We know that "ring" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ring = annulus.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 ANNULUS mean?
ANNULUS noun- A ring- or donut-shaped area or structure.
- The region in a plane between two concentric circles of different radii.
- Any topological space homeomorphic to the region in a plane between two concentric circles of different radius.
- The ring of the sun not covered by the moon in an annular solar eclipse.
- Structure in a fern that consists of differentially thick-walled cells on a sporangium that bend and distort as a result of drying.
- The membranous remnants of a partial veil which leaves a ring on the stem of a mushroom.
- (oil and gas production) The space contained between the centre well bore and any external tubing. Sometimes used for separated gas flow.