(-running; past -ran; past participle -run)with obj.
1
- spread over or occupy (a place) in large numbers覆盖（某地）; 蔓延于; 大批出没于：
the Mediterranean has been overrun by tourists.
有大量的游客来到地中海。
1.1
- conquer or occupy (territory) by force占领（领土）; 武力侵占：
the northern frontier was overrun by invaders.
北部边境被入侵者占领。
1.2
- move or extend over or beyond越过; 延伸到…之外：
let the text overrun the right-hand margin.
让文字超行到了右侧页边。
1.3
- run over or beyond (a thing or place)跑过（某物, 某地）; 超越：
Rufus overran third base.
鲁弗斯跑过了三垒。
1.4
- rotate faster than (another part of a machine)比（机器的另一部分）转速快：
as adj. overrunning an overrunning clutch.超限离合器。
2
- continue beyond or above (an expected or allowed time or cost)超过（时限, 预期成本）：
he mustn't overrun his budget
他不可以超出预算
no obj. he inadvertently allowed the match to overrun by 2 minutes.他不小心让比赛超时了两分钟。
1
- an instance of something exceeding an expected or allowed time or cost超时; 费用超出：
the cost overrun caused the company's share price to fall
费用超支造成公司股票价格下跌
mass noun an increase in the budgeted fee due to overrun of the project.由于该项目超支引起的预算费用的增加。
2
- mass noun the movement or extension of something beyond an allotted or particular position or space超限运动（或延伸）：
the system acts as a brake to prevent cable overrun.
该系统具有刹车功能用于防止钢缆超限运动。
2.1
- count noun a clear area beyond the end of a runway（机场跑道的）保险道。
3
- mass noun the movement of a vehicle at a speed greater than is imparted by the engine（车辆的）超限运动。
词源
Old English oferyrnan （see OVER-， RUN）.