Definition of "mile"

Athelstan Arundel walked home all the way, foaming and raging. No omnibus, cab, or conveyance ever built could contain a young man in such a rage. His mother lived at Pembridge Square, which is four good measured miles from Lincoln's Inn.

1892, Walter Besant, The Ivory Gate: A Novel, page 16

Ivor had acquired more than a mile of fishing rights with the house ; he was not at all a good fisherman, but one must do something ; one generally, however, banged a ball with a squash-racket against a wall.

1922, Michael Arlen, “3/19/2”, in “Piracy”: A Romantic Chronicle of These Days

From the ground, Colombo’s port does not look like much. […] But viewed from high up in one of the growing number of skyscrapers in Sri Lanka’s capital, it is clear that something extraordinary is happening: China is creating a shipping hub just 200 miles from India’s southern tip.

2013 June 8, “The new masters and commanders”, in The Economist, volume 407, number 8839, page 52