What does 大雪 mean?
大雪 is a Japanese noun meaning “heavy snow; heavy snowfall” in English. It can also be translated as “"major snow" solar term (approx. Dec. 7)” depending on context. It is written as 大雪 in kanji, おおゆき in hiragana, and ooyuki in romaji. This word is part of JLPT N4 vocabulary.
Example sentence
広い地域にわたって大雪が降った。
There was heavy snow over a large area.