Definition of border verb from the Oxford Advanced Learner's Dictionary

     

    border

     verb
    verb
    BrE BrE//ˈbɔːdə(r)//
     
    ; NAmE NAmE//ˈbɔːrdər//
     
    Verb Forms present simple I / you / we / they border
    BrE BrE//ˈbɔːdə(r)//
     
    ; NAmE NAmE//ˈbɔːrdər//
     
    he / she / it borders
    BrE BrE//ˈbɔːdəz//
     
    ; NAmE NAmE//ˈbɔːrdərz//
     
    past simple bordered
    BrE BrE//ˈbɔːdəd//
     
    ; NAmE NAmE//ˈbɔːrdərd//
     
    past participle bordered
    BrE BrE//ˈbɔːdəd//
     
    ; NAmE NAmE//ˈbɔːrdərd//
     
    -ing form bordering
    BrE BrE//ˈbɔːdərɪŋ//
     
    ; NAmE NAmE//ˈbɔːrdərɪŋ//
     
     
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  1. 1border something (of a country or an area) to share a border with another country or area the countries bordering the Baltic
  2. 2border something to form a line along or around the edge of something Meadows bordered the path to the woods. The large garden is bordered by a stream.
  3. Word Origin late Middle English: from Old French bordeure; ultimately of Germanic origin and related to board.Extra examples A hedge borders the path. The garden is bordered by a stream. countries bordering on the Black Sea Phrasal Verbsborder on something
See the Oxford Advanced American Dictionary entry: border