初氷

はつごおり【初氷】

the first freeze (of the year).

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はつごおり【初氷】

the first ice [freeze] (of the year).

●初氷が張るのは通例 10 月中旬だ. The first ice [freeze] of the year is usually in mid-October. | Ice usually forms [The water usually freezes over] for the first time in mid-October.