Definition of OS

os

Plural: ora, osar, ossa

Noun

  • A bone or a bony structure.
  • A long, narrow, winding ridge of sand and gravel; an esker.
  • A mouth or mouth-like opening; an orifice.
  • a mouth or mouthlike opening
  • a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
  • (computer science) software that controls the execution of computer programs and may provide various services
  • the left eye
  • rigid connective tissue that makes up the skeleton of vertebrates
  • a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
  • the 15th letter of the Roman alphabet
  • the blood group whose red cells carry neither the A nor B antigens
  • Synonym of bone.
  • An opening or entrance to a passage, particularly one at either end of the cervix, internal (to the uterus) or external (to the vagina).
  • An osar or esker.
  • Alternative form of o's.

Examples

  • Even a tiny word like OS can open up a crucial new scoring lane on the board.
  • Stripping his rack down to just OS felt like reducing his hand to its bare bones.
  • The word OS, short but geological, snaked across the double letter score.

Origin / Etymology

Borrowed from Latin os (“a bone”).

Synonyms

atomic number 76, atomic number 8, bone, group O, o, O, oculus sinister, operating system, osmium, oxygen, type O, orifice

Scrabble Score: 2

os: valid Scrabble (US) TWL Word
os: valid Scrabble Word in Merriam-Webster MW Dictionary
os: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 2

os: valid Words With Friends Word