verb intrans
(+ on/upon) said of an area: to touch (another area) along a boundary; to border
Our land abuts on theirs
(+ on/against) to terminate at a point of contact with (something); to be adjacent to
The town hall abuts on the church
(+ on/upon) to lean on (something) for support
Their shed abuts on our wall
to abut on or against (something)
abutter noun
[Middle English abutten; partly from Old French aboter to border on, from ad- + bout blow, end, from boter to strike; partly from Old French abuter to come to an end, from ad- + but end, aim, both of Germanic origin]