derrick
noun [ C ] engineering specialized uk/ˈder.ɪk/ us/ˈder.ɪk/
（港口装卸货物的）长臂吊车，长臂起重机
a type of crane (= a machine with a part like an arm), used for moving things on and off ships
（钻井）井架，钻塔
a tower above an oil well that supports the drill (= the machine for making a hole in the ground)