First come, first served
Meaning
Those who arrive earliest get served before others.
Usage
Used to describe prioritization based on timing.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Service line policy common in markets.
Used since the 19th century in customer service.