black-diamond
UK[ˌblæk ˈdaɪəmənd]US[ˌblæk ˈdaɪəmənd]
n
A diamond of a very dark color, often black or near-black, valued as a gemstone.
n
A symbol, especially on a ski trail map, indicating a very difficult slope for expert skiers only.
Morpheme Breakdown
black
diamond
black
color
diamond
gem/mineral
Etymology
The compound term "black-diamond" is a straightforward combination of two ancient words describing a specific physical property of a well-known substance. "Black" originates from a Proto-Germanic root meaning "burnt" or "dark," while "diamond" traces back through Latin to a Greek word meaning "unconquerable" or "invincible," referring to the stone's legendary hardness. The term first applied literally to the rare, dark-colored gemstone. In the mid-20th century, the ski industry adopted this striking term metaphorically, using the valuable and formidable "black diamond" as a symbol for the most challenging and dangerous slopes, thereby extending its meaning from a physical object to a rating of extreme difficulty.
Analysis
Structure: black (color) + diamond (gem/mineral)
- black: From Old English 'blæc', meaning "dark, ink." It functions as an adjective describing the color attribute of the noun.
- diamond: From Old French 'diamant', ultimately from Latin 'adamas' (genitive 'adamantis'), meaning "the hardest metal, diamond." It functions as the core noun, specifying the type of object.
Examples
She wore a stunning necklace featuring a rare black-diamond at its center.
Beginners should avoid the runs marked with a black-diamond symbol on the trail map.
The jeweler specialized in cutting and polishing fancy-colored diamonds, including black-diamonds.