There are multiple definitions - click on the translation that matches your context.

afastar por meio de impeachment

verbo

full

impeach

verb

Definitions of impeach

to charge an important person with a serious crime or misconduct; to formally charge a public official with a violation of the public trust

The Illinois House of Representatives earlier voted to impeach the governer over charges that he tried to "sell" Barack Obama's Senate seat.

to cause people not to believe in the truthfulness of a witness in a lawsuit

The object of impeaching a witness is to discredit him and destroy, if possible, the force and effect of his testimony.