Definition of grand adjective from the Oxford Advanced American Dictionary

      

    grand

     adjective
    adjective
    NAmE//ɡrænd//
     
    (grander, grandest)
     
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  1. 1impressive and large or important It's not a very grand house. The wedding was a very grand occasion.
  2. 2 Grand [only before noun] used in the names of impressive or very large buildings, etc. the Grand Canyon We left from Grand Central Station.
  3. 3needing a lot of effort, money, or time to succeed but intended to achieve impressive results a grand design/plan/strategy New Yorkers built their city on a grand scale.
  4. 4 (of people) behaving in a proud way because they are rich or from a high social class My aunt was such a grand lady. She put on her grandest air and waltzed into the living room to join the others.
  5. 5Grand used in the titles of people of very high social rank the Grand Duchess Elena see also grandeur
  6.  
    adverb He described himself grandly as a “landscape architect.” “It is not the money,” she replied grandly, “it is the principle of the thing.”
  7.  
    noun [uncountable] the grandness of the surroundings
  8. Idioms
    a/the grand old age
     
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    a great age She finally learned to drive at the grand old age of 70.
    a/the grand old man (of something)
     
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    a man who is respected in a particular profession that he has been involved in for a long time James Lovelock, the grand old man of environmental science
See the Oxford Advanced Learner's Dictionary entry: grand