WordReference Random House Learner's Dictionary of American English © 2014
a•but /əˈbʌt/USA pronunciation
v., a•but•ted, a•but•ting.
to be adjacent;
touch or join at the edge or border: [~ + on/upon/against + object]The garden abuts on the next yard.[~ + object]The garden abuts the next yard.
Collins Concise English Dictionary © HarperCollins Publishers::
abut /əˈbʌt/ vb (abuts, abutting, abutted)
Etymology: 15th Century: from Old French abouter to join at the ends, border on; influenced by abuter to touch at an end, buttress
- usually followed by on, upon, or against: to adjoin, touch, or border on (something) at one end
'abut' also found in these entries: