Pusa hispida, an earless seal inhabiting Arctic and subarctic coasts.

A space, usually square, with elastic ropes around the edge, in which a boxing match is fought.

A network of spies.

The branch of mathematics dealing with the algebraic structure of rings.

A decorative ring that is worn in a person's pierced tongue.

(algebra) A commutative ring with a unique maximal ideal, or a noncommutative ring with a unique maximal left ideal or (equivalently) a unique maximal right ideal.

An algebraist who specializes in ring theory

(cooking) A circular slice of squid, usually one of several, deep-fried as an antipasto.

plural of ring theorist

A ring affixed to the snout of cattle, to make them follow immediately when a chain is attached to the ring. / A ring worn on a person's nose, as jewelry.