the world > matter > properties of materials > temperature > heat > burning > a fire > [noun] > a live coal (6)
In a fire, furnace, etc.: a glowing ember; a piece of carbonized fuel burning or smouldering without flame. Frequently with distinguishing word or…
A live coal; an ember. Now only archaic or dialect.
a piece of burning coal left banked (banked, adj.1 2b) overnight in order to start the fire in the morning.