crocodile bird noun

An African bird (Pluvianus aegyptius) said to pick the crocodile's teeth or take leeches from its throat

crocodile clip noun

A clip for making electrical connections, with serrated jaws that interlock

crocodile tears plural noun

Hypocritical grief, from the old story that crocodiles (which have large lachrymal glands) shed tears over the hard necessity of killing animals for food