1 definition by Johnny McSteam

noun. Burgers from White Castle, officially known as "Sliders," but referred to as "steamos" for simplicity and ease of use. Named for the cooking process, which steams the burgers to an edible temperature.
"Man, I could really go for some steamos right now."

also used as a nickname for the actual restaurant

"I'm 'bout to head down to Steamo's. You in?"

the "os" ending can be applied to any menu item at White Castle. Sodas are "drinkos," chicken rings are "chickos," fish sandwiches are "swimmos," french fries are "potatos," etc.
by Johnny McSteam January 12, 2009
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