The term CATERPILLAR CASE can be broken down into five crossword solutions: COCOON (6 letters), TENT (4 letters), SETAE (5 letters), LARVA (5 letters), and DEERE (5 letters). COCOON is a protective covering spun by some insects, such as moths and butterflies, to protect their pupae during metamorphosis. A TENT is a shelter made of fabric or canvas, supported by poles and ropes, and used for camping outdoors. SETAE are stiff hairs or bristles found on the bodies of some insects, such as caterpillars. LARVA is the immature form of an insect that undergoes metamorphosis before becoming an adult. Finally, DEERE is a brand of agricultural and construction equipment, including tractors, combines, and excavators.