soup kitchen

WordReference Random House Unabridged Dictionary of American English © 2025

soup′ kitch′en, 

1. a place where food, usually soup, is served at little or no charge to the needy.
2. Military (in World War I) a mobile kitchen.
• 1850–55

Collins Concise English Dictionary © HarperCollins Publishers::

soup kitchen noun

1. a place or mobile stall where food and drink, esp soup, is served to destitute people
2. a mobile kitchen