Definition of: abut

(ə·but′) v. a·but·ted, a·but·ting v.i.
To touch, join, or cause to adjoin or touch at the end or side; border: with on, upon, or against.
—v.t. To border on; end at: This building abuts the park. See synonyms under ADJACENT. [<OF abouter border on (< a- to + bout end): infl. by OF abuter touch with an end (< a- to + but end)]
— a·but′ter noun
— a·but′ting adjective