Definitions:
with little or no light

(of a colour or object) not reflecting much light; approaching black in shade

(of a period or situation) characterized by great unhappiness or unpleasantness

hidden from knowledge; mysterious

denoting a velarized form of the sound of the letter l as it sounds at the end of a word or before another consonant (as in full or bulk in most accents of english).

the absence of light in a place

a dark colour or shade, especially in a painting