Crocodile (noun)

1. A large predatory semiaquatic reptile with a long snout, a tail, and webbed feet.
2. A fallacious investment scheme in which returns are paid to earlier investors using the capital of newer ones.

Origin:

Origin: late middle english: via old french from latin crocodilus, from greek krokodilos, perhaps from kroke ‘pebbles’ + drilos ‘worm’ (because it lies in wait in the mud).

Examples:

1. The crocodile lay motionless on the riverbank.
2. She learned about the dangers of crocodiles on her trip to Australia.
3. The crocodile tears of the politician did not fool anyone.