catnap /ˈkætˌnæp/noun 1verb 2forms 3 noun1 •A brief, light sleep, usually during the daytime.By 9 A.M., however, all but the most insomniac of the night owls were taking a catnap. — 1963 verb2 •To take a catnap (short sleep or nap).A toddler who is still having two day sleeps will generally have one good sleep and one catnap, and a toddler who is around three years of age and getting close to dropping her day sleep will catnap. — 2010 •To kidnap a cat.The man thought, if she refuses, I could catnap it early one Wednesday afternoon while she's dozing. Leave a bogus ransom note? — 2002 formscatnapped · catnapping · catnaps