Webster's Revised Unabridged Dictionary · 1913

Two

Two (to) , adjective

[Old English two, twa, properly fem. & neut., twei, twein, tweien, properly masc. (whence English twain), Anglo-Saxon twā, fem. & neut., twēgen, masc., , neut.; akin to OFries. twēne, masc., twā, fem. & neut., Old Saxon twēne, masc., twā, fem., twē, neut., Dutch twee, Old High German zwēne, zwō, zwei, German zwei, Icelandic tveir, tvar, tvau, Swedish två, Danish to, Gothic twai, twōs, twa; Lithuanian du, Russ. dva, Ir. & Gael. da, Welsh dau, dwy, Latin duo, Greek dy`o, Sanskrit dva. r300. Compare Balance, Barouche, Between, Bi-, Combine, Deuce two in cards, Double, Doubt, Dozen, Dual, Duet, Dyad, Twain, Twelve, Twenty, Twice, Twilight, Twig, Twine, n., Twist.]

One and one; twice one.
Two great lights. — Gen. i. 16
Two black clouds. — Milton

Two is often joined with other words, forming compounds signifying divided into, consisting of, or having, two parts, divisions, organs, or the like; as two-bladed, two-celled, two-eared, two-flowered, twohand, two-headed, two-horse, two-leafed or two-leaved, two-legged, two-lobed, two-masted, two-named, two-part, two-petaled, two-pronged, two-seeded, two-sided, two-story, two-stringed, two-toothed, two-valved, two-winged, and the like.

Collocations (1)
One or two , a phrase often used indefinitely for a small number.

Two , noun

1.
The sum of one and one; the number next greater than one, and next less than three; two units or objects.
2.
A symbol representing two units, as 2, II., or ii.
Collocations (1)
In two , asunder; into two parts; in halves; in twain; as, cut in two.