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- Zoology a large predatory semiaquatic reptile of an order that comprises the crocodiles, alligators, caimans, and gharial. Crocodilians are distinguished by long jaws, short legs, and a powerful tail.【动】鳄目动物（包括鳄、钝吻鳄、宽吻鳄和恒河鳄）。
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- Order Crocodylia: three families.鳄目：3科。
- of or relating to such reptiles（与）鳄目动物（有关）的。