thanksgiving

noun

1. 1. the act of giving thanks
   2. an expression of this; esp., a formal, often public, expression of thanks to God in the form of a prayer, etc.
2. ☆
   in full Thanksgiving Day
   1. an annual U.S. holiday observed on the fourth Thursday of November as a day of giving thanks and feasting: it commemorates the Pilgrims' celebration of the good harvest of 1621
   2. a similar Canadian holiday on the second Monday of October