road metal: meaning, definition, pronunciation and examples
LowTechnical/Historical
Quick answer
What does “road metal” mean?
Broken stone or crushed rock used as a foundation or surface layer for roads.
Audio
Pronunciation
Definition
Meaning and Definition
Broken stone or crushed rock used as a foundation or surface layer for roads.
Any hard aggregate material used in road construction, historically including slag or other durable waste materials.
Dialectal Variation
British vs American Usage
Differences
The term is understood in both varieties but is more likely to be encountered in British historical or regional texts. In American English, 'crushed stone', 'gravel', or 'aggregate' are more common contemporary terms.
Connotations
In both varieties, it carries a technical, industrial, or historical connotation. It may evoke images of early road construction.
Frequency
Very low frequency in contemporary general use. Higher frequency in historical texts, civil engineering contexts, or specific regional areas (e.g., rural UK).
Grammar
How to Use “road metal” in a Sentence
[Verb] + road metal (e.g., spread, lay, crush)road metal + [for Noun] (e.g., road metal for the track)[Adjective] + road metal (e.g., crushed, sharp, graded)Vocabulary
Collocations
Examples
Examples of “road metal” in a Sentence
verb
British English
- The council decided to road-metal the farm track last summer.
- They are planning to road-metal the entire lane next month.
American English
- The county plans to gravel the access road, not road-metal it.
- (Usage as a verb is extremely rare in AmE).
adverb
British English
- [No standard adverbial use]
American English
- [No standard adverbial use]
adjective
British English
- The road-metal lorry delivered its load by noon.
- We need a quote for road-metal supplies.
American English
- The aggregate truck arrived on site.
- (Adjectival use 'road-metal' is uncommon; 'aggregate' is preferred as a modifier).
Usage
Meaning in Context
Business
Rare. Might appear in tenders for rural roadworks or historical cost analyses.
Academic
Used in historical studies of infrastructure, civil engineering history, or historical geography.
Everyday
Very rare. Might be used by older generations in rural areas or those involved in traditional construction.
Technical
Used in civil engineering, particularly in historical specifications, some regional guidelines, or when describing the composition of older roadways.
Watch out
Common Mistakes When Using “road metal”
- Using it to refer to asphalt or tarmac (which are bound surfaces).
- Confusing it with 'road metal' as in vehicles made of metal.
- Assuming it is a high-frequency modern term.
FAQ
Frequently Asked Questions
No. It is a historical term for broken stone or crushed rock used in road building. The word 'metal' here comes from an old mining term for the useful rock or ore from a mine.
It is largely dated. Professionals today are more likely to use terms like 'aggregate', 'crushed stone', 'base course', or 'sub-base material'. It survives in historical contexts and some regional usage.
Yes, but it is very rare and chiefly British. It means to surface a road with broken stone (e.g., 'to road-metal a track').
Road metal is typically more angular, crushed stone, providing better mechanical interlock for stability. Gravel is often naturally rounded. In modern terms, road metal is a type of engineered aggregate.
Broken stone or crushed rock used as a foundation or surface layer for roads.
Road metal is usually technical/historical in register.
Road metal: in British English it is pronounced /ˈrəʊd ˌmet.əl/, and in American English it is pronounced /ˈroʊd ˌmet̬.əl/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms for this specific term]”
Learning
Memory Aids
Mnemonic
Think of a METAL road? No. Think of the hard, stone 'metal' that a ROAD is made from.
Conceptual Metaphor
MATERIAL FOR CONSTRUCTION IS A RAW RESOURCE (where the resource is broken down stone).
Practice
Quiz
What is the primary modern synonym for 'road metal' in civil engineering?