What is the meaning of get across?

verb

• Communicate successfully.
  • usage: "I couldn't get across the message"; "He put over the idea very well"
  • synonyms: put over
• Become clear or enter one's consciousness or emotions.
  • usage: "It dawned on him that she had betrayed him"; "she was penetrated with sorrow"
  • synonyms: click, get through, dawn, come home, sink in, penetrate, fall into place
• Travel across or pass over.
  • usage: "The caravan covered almost 100 miles each day"
  • synonyms: traverse, track, cover, cross, pass over, get over, cut through, cut across