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Valid in these dictionaries

TWL/NWL (Scrabble US/CA/TH)
SOWPODS/CSW (Scrabble UK / ALL)
ENABLE (Words with Friends)

Meaning of os

1 definition found

From WordNet (r) 3.0 (2006) [wn]:

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

Source : WordNet ® Princeton University. 2010.

Use this dictionary checker to learn more about a word - find out its meaning and also make sure whether that word is a valid word in any of these dictionaries (used by popular word games). Here is the list of dictionaries it checks for :

OCTWL / TWL : The official dictionary for scrabble game in United States, Canada and Thailand.
SOWPODS / CSW : UK and the rest of the world uses this dictionary for various word games including scrabble.
ENABLE - This is the default dictionary for Words with Friends.

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