hi hi /ˈhaɪ/

interjection

1. () [Informal] Words or phrases commonly used to acknowledge someone upon meeting or greeting.  ( g'day [Informal, Australian] , gidday [Informal, New Zeland] , howzit [Informal, South Africa] , aloha [Informal, American] , hello , hi [Informal] , howdy [Informal] , hullo , greetings , hallo , hey [Informal] , hiya [Informal] , wotcha [Informal, British] , wotcher [Informal, British] , yo [Informal] )
   Words or phrases commonly used to acknowledge someone upon meeting or greeting.
   

noun

1. () An expression of greeting  ( how-do-you-do , howdy , hullo , hello , hi )
   an expression of greeting
    Every morning they exchanged polite hellos
   every morning they exchanged polite hellos
   
   

 HI

1. A state in the United States in the central Pacific on the Hawaiian Islands  ( Aloha State , Haw. , Hawai'i , Hawaii , HI , Hawaii'i )
   a state in the United States in the central Pacific on the Hawaiian Islands
    Hawaii is a US state located in the Pacific Ocean, known for its beautiful beaches, surfing, and volcanoes
   Hawaii is a US state located in the Pacific Ocean, known for its beautiful beaches, surfing, and volcanoes