<p><strong>Noun</strong></p><ul><li>the part or edge of a surface or area that forms its outer boundary.</li><li>Synonyms: verge, periphery, rim.</li><li>the line, limit, or delimiting geographic feature that separates one country, state, province, etc., from another.</li><li>the district or region that lies along the boundary line of another.</li><li>the frontier of civilization.</li><li>the border, especially along the Rio Grande.</li><li>(in the British Isles) the region along the boundary between England and Scotland.</li><li>brink; verge.</li><li>an ornamental strip or design around the edge of a printed page, drawing, etc.</li><li>an ornamental design or piece of ornamental trimming around the edge of a fabric, rug, garment, article of furniture, etc.</li><li>Horticulture: a long, narrow bed planted with flowers, shrubs, or trees.</li><li>a strip of ground in which plants are grown, enclosing an area in a garden or running along the edge of a walk or driveway.</li><li>the plants growing in such a strip: a border of tulips along the path.</li><li>Theater: a narrow curtain or strip of painted canvas hung above the stage, masking the flies and lighting units, and forming the top of the stage set.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to make a border around; adorn with a border.</li><li>to form a border or boundary to.</li><li>to lie on the border of; adjoin.</li><li>(used without object) to form or constitute a border; be next to: California borders on the Pacific Ocean.</li><li>to approach closely in character; verge: The situation borders on tragedy.</li></ul>