doona day n. a day taken off from work for relaxation or idleness. Editorial Note: As indicated in the citations, synonyms include mental health day, duvet day, sickie (in Australia), and the uncommon eiderdown day. Etymological Note: Doona is trademarked brand in Australia now well on its way to becoming a generic term there for any duvet or down quilt. (source: Double-Tongued Dictionary)
Further reading
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can u tell me wht exactly doona means. is this a just a name..or contains any meaning
A doona is a brand name (much like Kleenex or Biro are brand names) for a duvet, or, a continental quilt.