The nave of a wheel; a boss; also a skid. (Welsh, hob, a swelling, a protuberance; compare also a hwb.) The Americans call Boston, Massachusetts, “The hub [boss] of the solar system.”
“Boston State-house is the hub of the solar system.”—Holmes: Autocrat of the Breakfast Table, chap. vi. p. 143.
“Calcutta swaggers as if it were the hub of the universe.”—Daily News, 1886.