os

/ˈɑs/

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Definitions

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
Noun
the left eye
Noun
rigid connective tissue that makes up the skeleton of vertebrates