plural of day sign

(idiomatic, intensifier, simile) Unceasingly; very; thoroughly; to a very high degree.

plural of day laborer

(nautical) A day in which a vessel may load or unload a cargo without paying an extra charge.

(Roman Catholic Church) The Tuesday before Easter.

A measure of heating or cooling, computed as the integral of a function of time that generally varies with temperature.

(skiing) A day of skiing purchased in a ski area, used to measure the number of skiers in any one particular ski area. A season pass is generally considered to be twenty (20) skier days.

A day on which a cruise ship remains at sea all day (i.e. passengers cannot leave the ship).

(US, slang) Thanksgiving Day; Turkey Day.

(computing, idiomatic) (of vulnerability) newly discovered, and therefore still not fixed and possibly exploited by hackers or other criminals