A cozy dwelling is a comfortable and inviting home. The term can be broken down into three crossword solutions: NEST (4 letters), ABODE (5 letters), and DEN (3 letters). NEST refers to a bird's home, but it can also be used to describe a comfortable and secure place. ABODE is a synonym for home or dwelling, while DEN is a small room or space that is often used as a living area. All three words are used to describe a cozy dwelling, which is a warm and inviting home.