What is the meaning of ridged?

verb

• Extend in ridges.
  • usage: "The land ridges towards the South"
  • synonyms: ridge
• Plough alternate strips by throwing the furrow onto an unploughed strip.
  • synonyms: ridge
• Throw soil toward (a crop row) from both sides.
  • usage: "He ridged his corn"
  • synonyms: ridge
• Spade into alternate ridges and troughs.
  • usage: "ridge the soil"
  • synonyms: ridge
• Form into a ridge.
  • synonyms: ridge

adjective

• Having a ridge or shaped like a ridge or suggesting the keel of a ship.
  • usage: "a carinate sepal"
  • synonyms: carinate, carinated, keeled