The crossword solution for the term FITS SNUGLY is NESTS. A nest is a structure built by certain animals, such as birds, to provide a safe place to lay eggs and raise their young. It is usually made of twigs, grass, and other materials and is often lined with softer materials like feathers or fur. Nests are typically built in trees, bushes, or on the ground, and they are designed to fit snugly around the animal's body.