N-SING(单数型名词) A hole-in-the-wall business is a business, especially a restaurant, that operates from very small premises. 小饭馆; 小店
It's a neighbourhood hole-in-the-wall joint, so don't expect anything fancy.
它只是一个社区小店,所以不要期望过高。
N-SING(单数型名词) A hole-in-the-wall machine is a machine built into the wall of a bank or other building, which allows people to take out money from their bank account by using a special card. 自动取款机 [英国英语][非正式]