OS

Scrabble 2 Words With Friends 2

Definition

noun a mouth or mouthlike opening.
noun a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals. — synonyms: osmium, atomic_number_76
noun (computer science) software that controls the execution of computer programs and may provide various services. — synonyms: operating_system
noun the left eye. — synonyms: oculus_sinister
noun rigid connective tissue that makes up the skeleton of vertebrates. — synonyms: bone