:a typically circular band of metal or other durable material, especially one of gold or other precious metal, often set with gems, for wearing on the finger as an ornament, a token of betrothal or marriage, etc.
:anything having the form of such a band: a napkin ring;a smoke ring.
:a circular or surrounding line or mark: dark rings around the eyes.
:a circular course: to dance in a ring.
:a number of people or things situated in a circle or in an approximately circular arrangement: a ring of stones;a ring of hills.
:the outside edge of a circular body, as a wheel; rim.
:an enclosed area, often circular, as for a sports contest or exhibition: a circus ring.
:a bullring.
:an enclosure in which boxing and wrestling matches take place, usually consisting of a square, canvas-covered platform with surrounding ropes that are supported at each corner by posts.
:the sport of boxing; prizefighting: the heyday of the ring.
: an area in a racetrack where bookmakers take bets.
a group of people cooperating for unethical, illicit, or illegal purposes, as to control stock-market prices, manipulate politicians, or elude the law: a ring of dope smugglers.
:a single turn in a spiral or helix or in a spiral course.
:Geometry. the area or space between two concentric circles.
:annual ring.
:a circle of bark cut from around a tree.
:Chemistry. a number of atoms so united that they may be graphically represented in cyclic form.Compare chain.
:Architecture. rowlock.
:a bowlike or circular piece at the top of an anchor, to which the chain or cable is secured.
:Also called spinning ring. Textiles. a circular track of highly polished steel on which the traveler moves and which imparts twists to the yarn by variations in its vertical movement.
:Also called ring gauge . a unit of measurement of the diameter of cigars, equal to 1/64 of an inch.
:Automotive, Machinery. piston ring.
:Mathematics. a set that is closed under the operations of addition and multiplication and that is an Abelian group with respect to addition and an associative semigroup with respect to multiplication and in which the distributive laws relating the two operations hold.
v.有主动词 verb
1
ringed, ring·ing.
:to surround with a ring; encircle: The lake is ringed with forest and farmland.
:to form into a ring.
:to insert a ring through the nose of.
:to hem in by riding or circling about them: The cowboys ringed the cattle they would be driving to market.
:to girdle.
: to encircle with a ring, horseshoe, etc.
v.无主动词 verb
1
ringed, ring·ing.
:to form a ring or rings.
:to move in a ring or a constantly curving course: The road rings around the mountain.