There is a persistent but unfounded notion that between can be used only of two items and that among must be used for more than two. Between has been used of more than two since Old English; it is especially appropriate to denote a one-to-one relationship, regardless of the number of items. It can be used when the number is unspecified <economic cooperation between nations>, when more than two are enumerated <between you and me and the lamppost><partitioned between Austria, Prussia, and Russia — Nathaniel Benchley>, and even when only one item is mentioned (but repetition is implied) <pausing between every sentence to rap the floor — George Eliot>. Among is more appropriate where the emphasis is on distribution rather than individual relationships <discontent among the peasants>. When among is automatically chosen for more than two, English idiom may be strained <a worthy book that nevertheless falls among many stools — John Simon><the author alternates among modern slang, clichés and quotes from literary giants — A. H. Johnston>.
Examples of BETWEEN
The ball rolled between the desk and the wall.
He stood between his mother and his father.
The office has two desks with a table between them.
They put up a fence between their house and their neighbor's house.
There are fences between all the houses.
If you want to lose weight, you shouldn't eat between meals.
Between bites of food, they talked to their teacher.
The two days between Monday and Thursday are Tuesday and Wednesday.
We should arrive between 9 and 10 o'clock.
Origin of BETWEEN
Middle English betwene, preposition & adverb, from Old English betwēonum, from be- + -twēonum (dative plural) (akin to Gothic tweihnai two each); akin to Old English twā two