1530s, "the giving of thanks," from thanks (n.) + present participle of give (v.). In the specific sense of "public celebration acknowledging divine favors" thanksgiving dates from 1630s (the first one in America was held October 1621 by Plymouth Colony Pilgrims in appreciation of assistance from members of the Massasoit tribe and celebration of the first harvest); though Thanksgiving Day itself is not attested until 1670s.
例文
1. The Colonnel bowed his head and whispered a prayer of thanksgiving .
この大佐は頭を下げて感謝の祈りをささやく。
2.It 's going to be the most magnificent Thanksgiving dinner we ever had.
これは私たちが参加した最も盛大な感謝祭の夕食です。/
3.Pumpkin pie is a traditional American dish served on Thanksgiving .
カボチャパイはアメリカの伝統的な感謝祭の食べ物です。
4.We always eat turkey on Thanksgiving .
感謝祭にはいつも七面鳥を食べます。
5.It 's traditional in America to eat turkey on Thanksgiving Day.