From WordNet (r) 3.0 (2006):
frost
n 1: ice crystals forming a white deposit (especially on objects
outside) [syn: frost, hoar, hoarfrost, rime]
2: weather cold enough to cause freezing [syn: freeze,
frost]
3: the formation of frost or ice on a surface [syn: frost,
icing]
4: United States poet famous for his lyrical poems on country
life in New England (1874-1963) [syn: Frost, Robert
Frost, Robert Lee Frost]
v 1: decorate with frosting; "frost a cake" [syn: frost,
ice]
2: provide with a rough or speckled surface or appearance;
"frost the glass"; "she frosts her hair"
3: cover with frost; "ice crystals frosted the glass"
4: damage by frost; "The icy precipitation frosted the flowers
and they turned brown"