Definition of sill

Scrabble & Words with friends points


  • sill is a valid Scrabble US word with a point value of 4
  • sill is a valid Scrabble UK word with a point value of 4
  • sill is a valid Words with friends word with a point value of 6

Definition of sill


  • (geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock (noun)
  • structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure (noun)

See definition of sill in Merriam Webster