Meaning

noun a mouth or mouthlike opening

noun a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known

noun (computer science) software that controls the execution of computer programs and may provide various services

originEtymology tree English o Old English -as Middle English -es English -s English os From o + -s.

Etymology from Wiktionary, CC BY-SA 3.0