hoarfrost Meaning, Definition & Usage

  1. noun ice crystals forming a white deposit (especially on objects outside)
    hoar; frost; rime.

WordNet

Hoar"frost` noun
Definitions
  1. The white particles formed by the congelation of dew; white frost. Written also horefrost. See Hoar, a.
    He scattereth the hoarfrost like ashes. Ps. cxlvii. 16.

Webster 1913