นิล

Etymology
From ; possibly via,. Cognate with Modern 🇨🇬; 🇨🇬,.

The last sense was coined by King around 1965 due to the fact that the term sounds like the first syllable of the fish's name in English,, and that it reflects the colour of the fish's skin as well.

Noun

 * 1) jet:
 * 2) dense black coal used for jewelry.
 * 3) deep black.
 * 4) any kind of black or very dark precious or semiprecious stone, including blue sapphire.
 * 5) any colour that resembles the said stone.
 * 6)  (classifier ) (ปลา~) : the fish  of the family.