get through

1.  Reach the end, finish, complete, as in Now that our computer system is working again, I should get through by mid-afternoon. It is also put as get through with, as in As soon as we get through with painting the kitchen, I'll call you. [Mid-1600s]
2.  Succeed in passing or surviving something, as in This epidemic is awful, but I'm sure we'll get through it somehow. [Mid-1700s]
3.  Also, get through to someone. Make contact with or reach someone, as in After trying to reach them all night, we got finally through, or He tried to get through to the family. [Late 1800s]
4.  Also get through to. Make oneself understood, as in Am I getting through to you? [Colloquial; mid-1900s]

The verb has 5 meanings:

Meaning #1: finish a task completely
  Synonyms: wrap up, finish off, mop up, polish off, clear up, finish up

Meaning #2: spend or pass, as with boredom or in a pleasant manner; of time
  Synonym: while away

Meaning #3: succeed in reaching a real or abstract destination after overcoming problems
  Synonym: come through

Meaning #4: be in communication with, establish communication with
  Synonyms: reach, get hold of, contact

Meaning #5: become clear or enter one's consciousness or emotions
  Synonyms: click, dawn, come home, get across, sink in, penetrate, fall into place