1. Language that is crude, offensive, or socially inappropriate; speech containing profanity or coarse language
The comedian's act was full of vulgar speech that offended many audience members.
O ato do comediante estava cheio de linguagem vulgar que ofendeu muitos membros da plateia.
2. Ordinary or common language spoken by the general population, as opposed to formal or literary language
In medieval times, Latin was formal language while vulgar speech was the common tongue of the people.
Na Idade Média, o latim era linguagem formal enquanto a linguagem vulgar era a língua comum do povo.