(astronomy) one day of solar time, the time between successive noons; the time in which a planet such as Earth apparently rotates once around its axis, relative to the sun (on Earth about 24 hours as an average - the length of solar day is not constant throughout the year)

Used other than figuratively or idiomatically: see market, day. / The day of the week in which a market is held in some particular location.

(idiomatic) In summary; ultimately.

(Britain, Ireland) A day on which a registered charity raises money, usually by selling small lapel flags. / (software) A day designated for changing to an incompatible system.

Victory in Europe day; the anniversary of the end of the Second World War in Europe, 8 May 1945.

(chiefly Britain and Ireland) Shrove Tuesday; in some traditions the day for pancake races for charity.

Lasting throughout the whole day. / Available throughout the whole day.

(military) A day for manoeuvres and tactical exercises in "the field". / A school day for athletic events; a sports day. / A day of class taken away from school for a field trip.

An annual celebration commemorating the anniversary of a nation's assumption of independent statehood.

A holiday celebrated in the United States commemorating the country's independence from Great Britain, celebrated each year on the 4th of July.