noun
A casual social gathering where tea is served; can be any informal meetup with tea.
日曜日に友達を呼んで茶会を開いた。
I invited friends over for a tea party on Sunday.
noun
A formal Japanese tea ceremony (茶の湯); often implies a traditional, ritualized gathering.
The tea ceremony master hosted a tea gathering.
Compound of 茶 (tea) and 会 (meeting, gathering). The reading さかい is a rare historical reading.