2. pl. (Astron.) A sign and constellation of the zodiac; Gemini. See Gemini.
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
(Twin) v. 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
(Twin), v. t.
1. To cause to be twins, or like twins in any way. Shak.
Still we moved
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
(Twin), v. i. To depart from a place or thing. [Obs.] "Ere that we farther twin." Chaucer.
Twinborn
(Twin"born`) a. Born at the same birth.
Twine
(Twine) n. [AS. twin, properly, a twisted or double thread; akin to D. twijn, Icel. twinni; from twi-.
See Twice, and cf. Twin.]
1. A twist; a convolution.
Typhon huge, ending in snaky twine.
Milton. 2. A strong thread composed of two or three smaller threads or strands twisted together, and used for
various purposes, as for binding small parcels, making nets, and the like; a small cord or string.
3. The act of twining or winding round. J. Philips.
Twine reeler, a kind of machine for twisting twine; a kind of mule, or spinning machine.
Twine
(Twine), v. t. [imp. & p. p. Twined ; p. pr. & vb. n. Twining.] [OE. twinen, fr. AS. twin a
twisted thread; akin to D. twijnen to twine, Icel. & Sw. tvinna, Dan. tvinde. See Twine, n.]
1. To twist together; to form by twisting or winding of threads; to wreathe; as, fine twined linen.
2. To wind, as one thread around another, or as any flexible substance around another body.
Let me twine
Mine arms about that body.
Shak.
