seacoal

名词noun

1. 1Coal from the sea: mineral coal that washes up from the sea onto beaches.
2. 2historical, chiefly Southern EnglandCoal 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).
3. 3(historical, technical, chiefly US) Coal to be used at sea: a certain class of mineral coal