the name given to person who is or resembles a homeless person or an undesirable character. They usually look like they havent washed or shaved in a very long time, and smell of eau de stale beer and pish. Their eyes are bloodshot and their skin an unhealthy grey colour. You will normally find these people drinking cheap alcohol, such as buckfast or white lightening, either on your local park bench or hanging about doorways in the town centre. One of their favourite hobbies is to sing or pester people on public transport, the bus is usually their transport of choice.
'did you smell him? he must be a street drinker'
'i'm so wrecked from boozing last night, i must look like a street drinker today'