(prep.) 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.
(prep.) In intermediate relation to, in respect to time, quantity or degree; as, between nine and ten o'clock.
(prep.) Used in expressing motion from one body or place to another; from one to another of two.
(prep.) Belonging to or participated in by, two, and involving reciprocal action or affecting their mutual relation; as, opposition between science and religion.