fɹɒst fɹɔst fɹɒst fɹɔst hɔː hɔɹ ho(ː)ɹ ˈhɔː(ɹ)fɹɒst aɪs damage by frost The icy precipitation frosted the flowers and they turned brown cover with frost ice crystals frosted the glass provide with a rough or speckled surface or appearance frost the glass she frosts her hair decorate with frosting frost a cake weather cold enough to cause freezing the formation of frost or ice on a surface ice crystals forming a white deposit (especially on objects outside)