| Webster's Online Dictionary |
| Part of Speech | Definition | |
| Expression | 1. Cold so intense as to freeze vegetation and cause it to turn black, without the formation of hoarfrost.[Websters]. | |
| Top | ||
| Expressions | Definition | ||
| Black frost | Cold so intense as to freeze vegetation and cause it to turn black, without the formation of hoarfrost. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||