noun

• (Canada) The Canadian public health insurance system.
  "He said, for him, the Liberals defined Canada by championing medicare and the Charter of Rights and Freedoms, and by addressing such issues as same-sex marriage."

name

• (US) The system of government subsidies for health care for the elderly and disabled.
  "My mom started getting Medicare last week."
• (Australia) The publicly funded universal health care system, operated by the government authority Medicare Australia.
  "Medicare benefits are available to all persons ordinarily resident in Australia with the exception of members of foreign diplomatic missions and their dependants."
• (Canada) Alternative letter-case form of medicare.