I .
/ hɑː; NAmE / exclamation
1.
(also hah ) the sound that people make when they are surprised or pleased or when they have discovered sth :
Ha! It serves you right!
Ha! I knew he was hiding something.
2.
(also ha! ha! ) the word for the sound that people make when they laugh
3.
(also ha! ha! ) ( informal , ironic ) used to show that you do not think that sth is funny :
Ha! Ha! Very funny! Now give me back my shoes.
II .
abbreviation
(in writing) hectare
••
WORD ORIGIN
I . natural utterance: first recorded in Middle English .