Os
Here is the meaning and Word Puzzle Game information for Os
OS is a valid Scrabble Word in NWL, formerly TWL (USA, Thailand, Canada)
OS is a valid Scrabble Word in CSW, formerly SOWPODS (Other Countries)
OS is a valid word in WWF
(n.) A bone.
(n.) A mouth; an opening; an entrance.
(n.) One of the ridges of sand or gravel found in Sweden, etc., supposed by some to be of marine origin, but probably formed by subglacial waters. The osar are similar to the kames of Scotland and the eschars of Ireland. See Eschar.