Merriam-Webster Collegiate Dictionary - cozy

 I. adjective  (cozier; -est)  Etymology: perhaps of Scandinavian origin; akin to Norwegian koselig ~  Date: 1709  1.  a. enjoying or affording warmth and ease ; snug a ~ lakeside cabin  b. marked by or providing contentment or comfort won by a ~ margin  2.  a. marked by the intimacy of the family or a close group  b. marked by or suggesting close association or connivance a ~ agreement  3. marked by a discreet and cautious attitude or procedure  Synonyms: see comfortable  • cozily adverb  • coziness noun  II. noun  (plural cozies)  Date: 1863  1. a padded covering especially for a teapot to keep the contents hot  2. a light detective story that usually features a well-educated protagonist and little explicit violence  III. adverb  Date: 1946 in a cautious manner play it ~ and wait for the other team to make a mistake — Bobby Dodd