three cheers; three banzai cheers
A ceremonial act of shouting 'banzai' three times in unison, often at celebrations, send-offs, or formal gatherings.
We gave three cheers at the closing ceremony.
万歳 is the cheer itself ('banzai!'), while 万歳三唱 refers to the act of shouting it three times.
Compound of 万歳 (banzai, 'ten thousand years', a celebratory cheer) and 三唱 (sanshō, 'three chants').