border

1 border /ˈboɚdɚ/ noun
plural borders
1 border
/ˈboɚdɚ/
noun
plural borders
Britannica Dictionary definition of BORDER
1 
a  [count] : a line separating one country or state from another
— often used before another noun
b  [count] : a boundary between places
c  the border : a specific border
2 
[count] : a decorative design along the edge of something (such as a rug or wallpaper)
3 
[count] : a narrow bed of plants along the edge of a garden or walk
2 border /ˈboɚdɚ/ verb
borders; bordered; bordering
2 border
/ˈboɚdɚ/
verb
borders; bordered; bordering
Britannica Dictionary definition of BORDER
[+ object]
1 
: to be next to (a country, state, or area) : to share a border with (a country, state, or area)
2 
: to form a border of (something) : to define the edge of (something)
— usually used as (be) bordered
3 
: to put a border on (something) — usually used as (be) bordered

border on

[phrasal verb]
1 
border on (something)
: to have a border on (something) : to lie on a boundary of (something)
2 
: to be very like (something) : to come very close to being (something)