| four-letter word |
any of several short English words that are considered offensive or obscene. |
| four-o'clock |
any of several common flowering garden plants that bear tubular varicolored blooms that open late in the day. |
| fourposter |
a bed that has four tall corner posts, which may be used to support bed curtains or a canopy. |
| fourscore |
being three times twenty in number; eighty. |
| foursome |
a match between two pairs of partners, as in golf or bridge, or the participants therein. [2 definitions] |
| foursquare |
having four equal sides that meet in four right angles; square. [4 definitions] |
| four-star |
describing a general or admiral whose insignia carries four stars. [2 definitions] |
| fourteen |
the number represented by the Arabic numeral 14 and by the Roman numeral XIV. [3 definitions] |
| Fourteen Points |
the provisions of U.S. President Woodrow Wilson's proposed plan for peace in Europe after World War I, first enumerated in a speech to the U.S. Congress in 1918. The 1919 Treaty of Versailles, which officially ended the war, ultimately included only four of the Fourteen Points, including the creation of a League of Nations. |
| fourteenth |
indicating rank or position between thirteenth and fifteenth. [3 definitions] |
| fourth |
indicating rank or position between third and fifth. [4 definitions] |
| fourth-class |
of or relating to a class next below the third, as for mailing, shipping, or the like. [2 definitions] |
| fourth dimension |
the dimension of time, required according to the theory of relativity to completely specify an event in space-time. |
| fourth estate |
the news media of a country, considered as an entity with political power. |
| Fourth of July |
in the United States, Independence Day. |
| fourth world |
(often cap.) the countries of the world that are poorest in resources and capital and have the most poorly educated population; least developed countries. |
| four-way |
giving access or passage in four directions. [2 definitions] |
| four-wheel drive |
a car that drives by means of all four wheels rather than the rear wheels only, or the drive system of such, in which both front and rear wheel axles are turned by the drive shaft. |
| fovea |
a small pit, hollow, or depression in a bone or organ. |
| fovea centralis |
a small depression at the back of the retina, forming the most acute point of vision. |
| foveola |
a small fovea, or very small depression or pit in a bone or organ. |