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

coação de testemunha

substantivo

partial

witness tampering

noun

Comparative law notes

Brazil

Under the Brazilian law, two different concepts fall under the definition of witness tampering: "corrupção de testemunha" (corruption of a witness via bribery, section 343 of the Brazilian Criminal Code) and "coação de testemunha" (coercion of a witness through violence or threat during the course of the proceedings, section 344 of the Brazilian Criminal Code).

Definitions of witness tampering

English

the act of trying to change or stop the testimony (=what someone says in court about the facts of a case) of a witness in a criminal or civil trial

Mr Quattrone was found guilty of two counts of obstruction of justice and one count of witness tampering.