We volunteer at the 'homeless' shelter. [=a building where homeless people can sleep and get food]
a shelter for 'the homeless'
(..) the Mississippi River again today. - I'll be damned. Forrest? - Why are you running? - Are you doing this for world peace? - For the homeless? - Are you running for women's rights? - The environment? They couldn't believe somebody would do all that running for no reason. - Why are you doing this? (..)1994 Forrest Gump