What does «salitroso» mean in Spanish?

Containing saltpeter.

Examples of use in Spanish: "es un suelo salitroso".

"lago salitroso".

"lecho salitroso del Lago de Texcoco".
sust. Site where saltpeter is found: salitral.
Salty, bad luck.

♦ Used in: Mexico

Examples of use in Spanish: "ando muy salitroso últimamente".
Informal name for a person born in General Alvear (Mendoza, Argentina).