Definify.com
Webster 1913 Edition
Twin
Twin
(twĭn)
, Adj.
1.
Being one of two born at a birth;
as, a
. twin
brother or sister2.
Being one of a pair much resembling one another; standing in the relation of a twin to something else; – often followed by to or with.
Shak.
3.
(Bot.)
Double; consisting of two similar and corresponding parts.
4.
(Crystallog.)
Composed of parts united according to some definite law of twinning. See , 4.
Twin
, Noun.
Twin boat
, or
Twin ship
(Naut.)
, a vessel whose deck and upper works rest on two parallel hulls.
– Twin crystal
. See , 4.
– Twin
, Noun.
Twin flower
(Bot.)
, a delicate evergreen plant (
– Linnaea borealis
) of northern climates, which has pretty, fragrant, pendulous flowers borne in pairs on a slender stalk. Twin-screw steamer
, a steam vessel propelled by two screws, one on either side of the plane of the keel.
Twin
,Noun.
1.
One of two produced at a birth, especially by an animal that ordinarily brings forth but one at a birth; – used chiefly in the plural, and applied to the young of beasts as well as to human young.
3.
A person or thing that closely resembles another.
4.
(Crystallog.)
A compound crystal composed of two or more crystals, or parts of crystals, in reversed position with reference to each other.
☞ The relative position of the parts of a twin may be explained by supposing one part to be revolved 180° about a certain axis (called the twinning axis), this axis being normal to a plane (called the twinning plane) which is usually one of the fundamental planes of the crystal. This revolution brings the two parts into parallel position, or vice versa. A contact twin is one in which the parts are united by a plane surface, called the composition face, which is usually the same as the twinning plane. A penetration twin is one in which the parts interpenetrate each other, often very irregularly. Twins are also called, according to form, cruciform, geniculated, etc.
Twin
,Verb.
I.
[
imp. & p. p.
Twinned
; p. pr. & vb. n.
Twinning
.] 1.
To bring forth twins.
Tusser.
2.
To be born at the same birth.
Shak.
Twin
,Verb.
T.
1.
To cause to be twins, or like twins in any way.
Shak.
Still we moved
Together,
Together,
twinned
, as horse’s ear and eye. Tennyson.
2.
To separate into two parts; to part; to divide; hence, to remove; also, to strip; to rob.
[Obs.]
The life out of her body for to
twin
. Chaucer.
Twin
,Verb.
I.
To depart from a place or thing.
[Obs.]
“Ere that we farther twin.” Chaucer.
Webster 1828 Edition
Twin
TWIN
, n.1.
One of two young produced at a birth by an animal that ordinarily brings but one; used mostly in the plural, twins; applied to the young of beasts, as well as to human beings.2.
A sign of the zodiac; Gemini.3.
One very much resembling another.TWIN
,Adj.
1.
Very much resembling.2.
In botany, swelling out into two protuberances, as an anther or germ.TWIN
,Verb.
I.
1.
To bring two at once.2.
To be paired; to be suited. [This verb is little used.]TWIN
,Verb.
T.