Definitions

1. interjection

a loud, sharp cry, especially one of joy or excitement

“She let out a loud ‘chaa’ when she won the contest.”

2. noun

a small stream or brook, especially in China

“We followed the chaa through the countryside to find the hidden waterfall.”

3. verb

to cry or shout loudly, especially with joy

“The crowd began to chaa with excitement when the concert started.”