A restaurant or establishment that serves food, especially one appealing to or resembling a roadside cafe.
Likely a blend or variant of 'cat-stop' or related to 'cat-house' meaning a roadside eating place. The exact etymology is unclear but may derive from informal American diner nomenclature.
Like many words born from American slang, 'cathop' is relatively obscure today, but it captures mid-20th century roadside culture when informal eating places dotted America's highways.
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