oss Meaning, Definition & Usage

1. noun a mouth or mouthlike opening
   os.
   
2. noun a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
   osmium; atomic number 76; Os.
   
3. noun (computer science) software that controls the execution of computer programs and may provide various services
   operating system; OS.
   
4. noun the left eye
   oculus sinister; OS.
   
5. noun rigid connective tissue that makes up the skeleton of vertebrates
   os; bone.
   

WordNet