[hole-in-the-wall] {n. phr.} A small place to live, stay in, orwork in; a small, hidden, or inferior place.

The jewelry storeoccupied a tiny hole-in-the-wall.

When Mr. and Mrs. Green werefirst married, they lived in a little hole-in-fhe-wall in a cheapapartment building.

2. {slang}, {citizen's band radio jargon}. Atunnel.

Let's get through this hole in the wall, then we'll changeseats.