wind from mountains, (kokuji)
颪 centers on a specific type of wind: a down-draft or wind that blows down from mountains. It is a kokuji, a character created in Japan to express this local phenomenon.
颪 is a Japanese kokuji formed by combining 下 (down, below) and 風 (wind) to represent a wind that blows downward from mountains.
The top 下 means down, and the bottom 風 means wind. Together they show wind coming down from the mountains.
For おろし, imagine the wind blowing down and whispering 'oh, roshi' as it rushes past: おろし.
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