butt against v 1: lie adjacent to another or share a boundary; "Canada adjoins the U.S."; "England marches with Scotland" [syn: {border}, {adjoin}, {edge}, {abut}, {march}, {butt}, {butt on}] 2: collide violently with an obstacle; "I ran into the telephone pole" [syn: {run into}, {bump into}, {jar against}, {knock against}]