1. Perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts
   - frostweed, frost-weed, frostwort, Helianthemum canadense

Type of: helianthemum, sun rose, sunrose

• four
• four flush
• Four Horsemen
• Four Hundred
• four o'clock
• four times
• four-card monte
• four-centered arch
• four-dimensional
• four-eyes
• four-flusher
• four-footed
• four-footed butterfly
• four-four time
• four-hitter
• four-hundredth
• Mumbai
• mumble
• mumble-the-peg
• mumbler
• mumblety-peg
• mumbling
• mumbo jumbo
• mumification necrosis
• mummer