borough
/ˈbʌrə/noun
1- a town or district which is an administrative unit, in particular（作为行政区划的）镇, 区, 尤指：
1.1
- Brit. a town (as distinct from a city) with a corporation and privileges granted by a royal charter〈英〉（获皇家特许的）自治市镇。
1.2
- Brit. historical a town sending representatives to Parliament〈英, 史〉议会中有代表的市镇。
1.3
- an administrative division of London伦敦市的行政区。
1.4
- a municipal corporation in certain US states（美国某些州的）自治村镇。
1.5
- each of five divisions of New York City美国纽约市的行政区（共五个）。
1.6
- (in Alaska) a district corresponding to a county elsewhere in the US美国阿拉斯加州的行政区（相当于其他州的县）。
词源
Old English burg, burh 'fortress, citadel', later 'fortified town', of Germanic origin; related to Dutch burg and German Burg. Compare with BURGH.