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

lei

substantivo

full

law

noun

Comparative law notes

Brazil

In Brazil, pieces of legislation are usually referred to by either a number (e.g. lei n° 6.404/76) or a name (e.g. Lei das SA). When translating into English, use Law when mentioning the number (e.g. Law No. 6,404) and Act when mentioning the name (e.g. Corporation Act).

Definitions of law

English

(before a noun) relating to the legal profession, the courts or to a particular legal system

He works for a law firm.

English

a specific rule within a particular country, area or community, recognised as binding and enforced by an authority; a rule enacted by the legislature

A new law on civil partnerships will be debated in parliament later today.

English

relating to the area of knowledge that deals with systems of rules

a law degree