/ˈbôrdər/

noun

noun: border plural noun: borders

1. a line separating two political or geographical areas, especially countries.: "border patrols" "the German border with Denmark".
   synonyms: frontier, boundary, partition, borderline, dividing line, bounding line, perimeter, marches, bounds

2. the edge or boundary of something, or the part near it.: "the northern border of their distribution area" "the unknown regions at the borders of physics and electronics".

3. a band or strip, especially a decorative one, around the edge of something.: "put a white border around the picture".

verb

verb: border 3rd person present: borders past tense: bordered past participle: bordered gerund or present participle: bordering

1. form an edge along or beside (something).: "a pool bordered by palm trees".
   synonyms: surround, enclose, encircle, circle, edge, skirt, fringe, hem, bound, line, flank