An example of a border is the outside edges of a garden bed.
An example of a border is a mat cut for a 5x7 photo to fit inside an 8x10 frame.
An example of a border is Antler, North Dakota between the US and Canada.
An act that borders on heroism.
Canada borders the United States.
The United States borders on Canada.
Connecticut borders on Massachusetts.
- To be next to or adjoining.
- To be like; almost be.His grief borders on madness.
- The area surrounding the boundary between Scotland and England.
Idioms and Phrasal Verbs
Origin of border
- Middle English bordure from Old French bordeure from border to border from bort border of Germanic origin
From American Heritage Dictionary of the English Language, 5th Edition