A residue generated in combustion, comprising the fine particles that rise with the flue gases, and used in construction materials.

Fraxinus nigra, a species of ash tree native to much of eastern Canada and the northeastern United States. / Acer negundo, a North American maple. / Eucalyptus sieberi, an Australian tree.

(colloquial) Entirely ready.

(colloquial) Very angry.

(simile) Utterly black; pitch-black.

A passerine bird, Pericrocotus divaricatus, of eastern Asia that belongs to the minivet genus Pericrocotus in the cuckooshrike family, Campephagidae.

(simile) Very common (in various senses).

Not as naive or foolish as might be expected.

A region of Asia, usually comprising of what is now Central Asia, Mongolia (including Inner Mongolia), and Northeastern China, particularly as an area of historically strong pastoralist influence in contrast to surrounding sedentary civilizations.

(rail transport) The visual appearance of a railway signal