Webster's Revised Unabridged Dictionary · 1913

Between

Between ({not transcribed}) , preposition

[Old English bytwene, bitweonen, Anglo-Saxon betweónan, betweónum; prefix be- by + a form from Anglo-Saxon twā two, akin to Gothic tweihnai two apiece. See Twain, and compare Atween, Betwixt.]

1.
In the space which separates; betwixt; as, New York is between Boston and Philadelphia.
2.
Used in expressing motion from one body or place to another; from one to another of two.
If things should go so between them. — Bacon
3.
Belonging in common to two; shared by both.
Castor and Pollux with only one soul between them. — Locke
4.
Belonging to, or participated in by, two, and involving reciprocal action or affecting their mutual relation; as, opposition between science and religion.
An intestine struggle, open or secret, between authority and liberty. — Hume
5.
With relation to two, as involved in an act or attribute of which another is the agent or subject; as, to judge between or to choose between courses; to distinguish between you and me; to mediate between nations.
6.
In intermediate relation to, in respect to time, quantity, or degree; as, between nine and ten o'clock.
I... hope that between public business, improving studies, and domestic pleasures, neither melancholy nor caprice will find any place for entrance. — Johnson
Collocations (2)
Between decks , the space, or in the space, between the decks of a vessel.
Between ourselves or Between you and me or Between themselves , in confidence; with the understanding that the matter is not to be communicated to others.

Between , noun

Intermediate time or space; interval. [Poetic & Rare] — Shakespeare