1. basement - Noun
2. basement - Adjective
The outer wall of the ground story of a building, or of a part of that story, when treated as a distinct substructure. ( See Base, n., 3 (a).) Hence: The rooms of a ground floor, collectively.
Source: Webster's dictionaryLast year, I made a refrigerator in my basement. And I needed to because I needed to figure how - you know there is no such thing as "cold." There is only less heat. Alton Brown
There is no victory at bargain basement prices. Dwight D. Eisenhower
The two of us had come a long way together from our humble beginnings and the basement apartment that had been our first home as newlyweds in 1957, when I was still a law student at Laval University in Quebec City. Jean Chrétien
I liked to work in a shop down in the basement and invent things and build gadgets. Francis Ford Coppola
I've been in the bargain basement of the movie business. Linda Fiorentino
We had a lion that was living in somebody's basement outside of Branson, Missouri. Tippi Hedren