DEEP——含义、同义词和翻译| 柯林斯英语词典资源 If something is deep, it extends a long way down from the ground or from the top surface of something [ ] 2 A deep container, such as a cupboard, extends or measures a long distance from front to back [ ] 3 You use deep to talk or ask about how much something measures from the surface to the bottom, or from front to back