A diminutive or informal term for a crocodile, often used in Australian English or colloquial speech.
Informal shortening of 'crocodile,' formed by adding the diminutive suffix '-o' common in Australian English slang, which typically makes words sound more casual and friendly.
Australian slang is full of these '-o' endings (like 'servo' for service station and 'arvo' for afternoon), and 'crocko' shows how English speakers around the world playfully shorten words to fit their regional style!
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