Ha Definition
 hä 
    interjection
  
 Used variously to express surprise, wonder, triumph, anger, etc.
 Webster's New World 
A representation of laughter.
Ha, ha, ha! That’s funny.
 Wiktionary 
    abbreviation
  
 Hectare(s)
 Webster's New World 
Hoc anno (this year)
 American Heritage 
Hour angle.
 American Heritage 
(UK, colloquial) Abbreviated form of half.
Wiktionary 
    symbol
  
 Hahnium.
 Webster's New World 
    verb
  
 (archaic) Alternate spelling of a4
 Wiktionary 
(archaic) Alternate spelling of a ("have")
 Wiktionary 





