from the sea: mineral coal that washes up from the sea onto beaches.
John Thompson of Setauket has a permit to go to Flushing and other parts of Long Island to search for sea-coal, of which he hath probable information.
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(historical, chiefly, Southern England) Coal from across the sea: mineral coal, as opposed to charcoal, in a time and place in which the former arrived by ship and the latter arrived overland (such as London in Elizabethan times).
1662, Henry More, An Antidote Against Atheism, Book II, A Collection of Several Philosophical Writings of Dr. Henry More, p. 49:
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(historical, technical, chiefly, U.S.) Coal to be used at sea: a certain class of mineral coal, especially suitable for the steam engines of ships at sea and locomotives.
: "and then of Sea-Coal and other necessary Fewel, fit for the working or melting of these Metalls;"
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