A religious meeting or religious services held on the last night of the year, and terminated on the arrival of the new year. See watch-night.(noun)
The Century Dictionary (Public Domain)
Use "watch-meeting" in a sentence
"Society watch-meeting, which was postponed until March."
"At our watch-meeting I asked how many there were who would come to the front pews and kneel before God as a token to Christians to pray for them, and ten came."
"Pastor Brown was impressed to observe watch-meeting the last night in December, 1873."