os

Noun

• rigid connective tissue that makes up the skeleton of vertebrates

• the left eye

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

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

• a mouth or mouthlike opening

Related words

• Synonyms: 
  bone , oculus sinister , OS , operating system , osmium , Os , atomic number 76