A sheet of igneous rock intruded between layers of older rock.
(Noun)
Synonyms:
  1. threshold
  2. beam
  3. bottom of the frame
  4. doorstone
  5. mudsill

Words Related to Sill

Related words are words that are directly connected to each other through their meaning, even if they are not synonyms or antonyms. This connection may be general or specific, or the words may appear frequently together.