'butt against' definitions:

Definition of 'butt against'

(from WordNet)
verb
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 against, butt on]
verb
Collide violently with an obstacle; "I ran into the telephone pole" [syn: run into, bump into, jar against, butt against, knock against]