Vesak
/ˈvesæk/(亦作Wesak或Visākha)
noun
mass noun
1- the most important Buddhist festival, taking place at the full moon when the sun is in the zodiacal sign of Taurus, and commemorating the birth, enlightenment, and death of the Buddha卫舍迦节（佛教最重要节日, 时间为太阳位于黄道汉宫第二宫月圆日, 纪念佛陀诞辰、开悟与去世）。
1.1
- the month in which this festival occurs卫舍迦月。
词源
Sinhalese vesak, via Pali from Sanskrit vaiśākha, denoting the month April-May.