1 a container for holding liquids or gas; the amount that a tank will hold 水箱;气罐;一箱或罐的量:
a water/fuel/petrol/fish tank水箱;燃料箱;油箱;鱼缸We drove there and back on one tank of petrol.我们靠一箱汽油开车来回跑了一趟。☞pictures at dive and motorbike 见dive及motorbike插图
2 a large, heavy military vehicle covered with strong metal and armed with guns, that moves on special wheels 坦克