hi

exclamation3

1. •
   a greeting usually said to friends and people the speaker knows well, when meeting them or when they arrive

   • Hi, how are you?
   • I just dropped by to say “hi”.
2. •
   An exclamation to call attention.

   • 'Come back now!' shouted Sam. 'Hi! Come back!' But Gollum had vanished. — 1954
3. •
   Expressing wonder or derision.

   • How did he do that, hi?
   • That’s mad, hi!

noun1

1. •
   The word "hi" used as a greeting.

   • I didn't even get a hi.

noun3

1. •
   Abbreviation of Hawaii: a state of the United States.
2. •
   Abbreviation of high (“high gear or high range”).
3. •
   Initialism of hyperspectral imaging.