hole-in-the-wall

• hole in the wall

hole-in-the-wall (plural hole-in-the-walls or holes-in-the-wall)

1. A restaurant, shop or other establishment catering to customers that is particularly inconspicuous and easily overlooked.
2. (colloquial, chiefly British) An automated teller machine (ATM).

Although either plural can be used for both meanings, hole-in-the-walls tends to be most commonly used for the "obscure place" sense, and holes-in-the-wall is more frequently used to mean "automated teller machines".

Used to refer to an inconspicuous establishment, the term has a connotation that the quality of the food or rendered services deserves recognition.

The British sense of an automated teller machine may have originated as a trademark of Barclays.

• know someone from a hole in the wall