hoar
US
UK hoar n: literary (white ice, white frost)
SC 白霜 bái shuāng
SC 冰霜 bái shuāng，bīng shuāng
Thick hoar coated the branches of the trees after the cold night.
hoar frost n: (white frost)
SC 白霜 bái shuāng
It was a cold night, and we awoke to a hoar frost in the morning.