1 intr. (foll. by on) (of estates, countries, etc.) adjoin (another).
2 intr. (foll. by on, against) (of part of a building) touch or lean upon (another) with a projecting end or point (the shed abutted on the side of the house).
3 tr. abut on.
Etymology: OF abouter (BUTT(1)) and AL abuttare f. OF but end
Useful english dictionary. 2012.