(rhetorical, often humorous or ironic) Used to announce a fact of which the addressee was, or appeared to be, ignorant.

A country in Oceania. Official name: Independent State of Papua New Guinea.

One of the six states of Australia. Capital: Sydney. Situated in the south-eastern part of the continent.

A holiday in many countries to welcome the New Year of the Gregorian calendar on January 1.

A vow that one makes on New Year's Eve or New Year's Day for the coming year.

A wish said around the start of a new year to wish someone well for the New Year (holiday) or for the (entire) new year.

(informal) utterly new, as new as possible

(literally) To begin excavating and levelling earth for a new building, or, originally, for cultivation. / (by extension) To initiate a new venture, especially something never before attempted.

(informal) An instant; an extremely short time.

(music) A genre of music of a mystical and meditative nature, associated with New Age philosophies, usually in the style of world music and using the sounds of nature.