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

Cadastro de Pessoas Físicas (CPF)

substantivo próprio

partial

social security number

noun

Comparative law notes

In Brazil, the identification number that is used by the state for tax and other identification purposes with respect to individuals is the Cadastro de Pessoas Físicas (CPF).

Definitions of social security number

an official number that is given to every citizen by the state and used as a form of identification

Someone stole his name and social security number to try to open a bank account.