noun Chiefly Midland U.S. and Canadian (chiefly Ontario ).
a barn built into the side of a hill or with earth banked around it, often a two-story barn thus having a ground-level entrance for each story.
Origin of bank barn
An Americanism dating back to 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019