Chionomys nivalis, a species of rodent found in mountainous regions.

Initialism of Health at Every Size. / Initialism of Hellenic Aeronautical Engineers Society.

(mineralogy) An orthorhombic-disphenoidal green mineral containing arsenic, calcium, cobalt, hydrogen, and oxygen.

(informal) A very thrifty person; one who saves a lot of money. / (UK) A type of railway ticket offering a significant discount on the normal fare.