oil wellˈoil well noun [countable] a hole that is dug in the ground so that oil can be taken out在地下钻凿的用于开采石油的井agujero que se excava en el suelo para extraer petróleoburaco cavado no solo para extrair petróleo石油を採取するために地面に掘られた穴석유를 채취하기 위해 땅에 뚫은 구멍