5butt verb
butts; butted; butting US : to place something right next to something else or to be right next to something else [+ obj] ▪ We laid the boards so that the ends were butted against the wall. [no obj] ▪ The floorboards are weakest where they butt (against each other). [=where they meet, where the ends of the boards touch each other] ▪ The apartment building butts up against an old church.
— compare 3butt
