Fetching details from the dictionary...
winter vacation; winter holidays
期末試験が終わって、いよいよ冬休みが始まる！
Final exams are over, and winter vacation is finally starting!
冬休みの宿題が全然終わらない。
The winter vacation homework is not finished at all.
冬休みは実家に帰省する。
I'll go back to my hometown for winter break.