Reading Theme:
Coal Meaning, Types, and Common Uses (2 meaning)
Meaning 1：combustible rock (coal)
coal
/koʊl/
n.
A black solid that is dug from the ground and burned for heat or power.
combustible rock
➕
/kəmˈbʌstəbəl rɑːk/
n.
A black or dark brown sedimentary rock formed from ancient plant remains, used as a fuel for heating and electricity generation.
📘 Details & Usage
📖 Root Explanation
From Old English col, Proto-Germanic *kula; akin to German Kohle.
💡 Mnemonic
Lump of coal in stocking: black, solid, punishment for naughty kids.
📖 Example
In winter, my grandparents used to heat their old house by burning coal in a stove.
In winter, my grandparents used to heat their old house by burning coal in a stove.
🔗 Collocations
coal mine – a place where coal is extracted from the ground
coal-fired power plant – a power station that burns coal to generate electricity
coal seam – a layer of coal in the ground
🔄 Synonyms
anthracite (n.) – a hard, compact variety of coal with high carbon content
bituminous coal (n.) – a soft coal containing bitumen, used for heating
lignite (n.) – a brownish coal of low quality
🌱 Derivatives
coalmine (n.) – a mine from which coal is obtained
coal-fired (adj.) – powered by burning coal
coal miner (n.) – a person who works in a coal mine
📖 Cultural Story
Used since antiquity, coal fueled the Industrial Revolution. The Christmas tradition of giving it to naughty children began in 19th-century America.
Meaning 2：Christmas punishment (coal)
coal
/koʊl/
n.
In old Christmas stories, something bad kids get instead of presents, symbolizing a poor reward.
Christmas punishment
➕
/ˈkrɪsməs ˈpʌnɪʃmənt/
n.
In Christmas folklore, a lump of coal given to a child as a symbol of being naughty and not deserving gifts.
📘 Details & Usage
📖 Example
My grandma told me that if I wasn't good, I'd find a lump of coal in my stocking on Christmas morning.
My grandma told me that if I wasn't good, I'd find a lump of coal in my stocking on Christmas morning.
🔗 Collocations
lump of coal – a piece of coal given as a punishment
get coal – to receive coal as a Christmas consequence
coal in stocking – the tradition of putting coal in a Christmas stocking
🔄 Synonyms
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