BUTT; BUT n.
end to end without overlapping, as planks. -- Butt weld (Mech.), a butt joint, made by welding together the flat ends, or edges, of a piece of iron or steel, or of separate pieces, without having them overlap. See Weld. -- Full butt, headfirst with full force. [Colloq.] "The corporal . . . ran full butt at the lieut…