Definition of hardy adjective from the Oxford Advanced American Dictionary

     

    hardy

     adjective
    adjective
    NAmE//ˈhɑrdi//
     
    (hardier, hardiest)
     
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  1. 1strong and able to survive difficult conditions and bad weather a hardy breed of sheep These hardy mountain folk seem to thrive on the cold. A few hardy souls had turned out to watch the hockey game.
  2. 2(of a plant) that can live outside through the winter a hardy annual/perennial Parsley is hardy and can be grown outdoors from the spring.
 
noun [uncountable] The people here are known for their hardiness and courage.
See the Oxford Advanced Learner's Dictionary entry: hardy