If you hear someone use the word jumbo for “bologna,” it’s a good bet they’re from Pittsburgh or somewhere nearby in southwestern Pennsylvania. A regional company, Isaly’s, sold a brand of lunchmeat with that name. This...
jumbo n.— «The Red Lake gold mine covers 55,000 acres of western Ontario, amid mountains, creeks, and pine forests populated by wild caribou. In its main shaft, which plunges 1,023m into the earth, drilling machines called jumbos extract...