pea coal
- Noun:
- A specific size of coal: "pea coal" refers to a grade or size of anthracite or bituminous coal that is smaller than "egg coal" and larger than "nut coal." It is typically about the size of a pea, used for domestic heating and industrial purposes.
- (A specific small-sized coal for heating.)
- (A quantity of coal of this particular size.)
"Pea coal" as a technical term: In coal grading, "pea coal" is a standardized size (usually between 1/2 inch and 3/4 inch in diameter) used in specifications for stokers and boilers.
- The engineer specified pea coal for the new heating system to ensure consistent combustion. (A precise coal size for technical applications.)
"Pea coal" in historical contexts: Before modern heating, pea coal was commonly sold for household use in hand-fired furnaces.
- In the 19th century, pea coal was a common fuel for residential coal stoves. (A historical fuel type.)
Coal (n): a black or dark-brown combustible mineral used as a fuel.
- Coal is still used in some power plants for electricity generation. (The broader category of fuel.)
Pea-sized (adj): having a diameter similar to that of a pea (about 1/4 to 1/2 inch).
- The gravel was pea-sized, suitable for drainage. (Describing size by comparison.)
- Stove coal: another term for coal sized for domestic stoves, often overlapping with pea coal.
- Nut coal: a slightly larger size of coal (about the size of a walnut), distinct from pea coal.
"To be as black as coal": to be very dark in color.
- The chimney sweep's hands were as black as coal. (A simile using coal.)
"To carry coals to Newcastle": to do something unnecessary or redundant (Newcastle is a coal-mining region).
- Bringing extra firewood to the cabin is like carrying coals to Newcastle. (An idiom about wastefulness.)
Note: There are no common phrasal verbs or idioms that specifically use "pea coal" as a standalone phrase. The term is purely technical and descriptive.