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