| fire wall |
a wall of fireproof material intended to prevent the spread of fire, as from one part of a building to another. [2 definitions] |
| firewater |
(informal) alcoholic beverages, esp. whiskey. |
| fireweed |
any of various wild plants that grow easily in clearings caused by fire, such as willow herb. |
| firewood |
wood for cooking or heating. |
| fireworks |
(sometimes used with a sing. verb) devices that burn or explode to produce noise, bright light, or a brilliant display of colors. [3 definitions] |
| firing line |
the line or set of positions from which troops fire at an enemy or targets. [3 definitions] |
| firing squad |
a group, usu. of military personnel, assigned to shoot a person who has been sentenced to death. |
| firkin |
a small wooden tub or keg. [2 definitions] |
| firm1 |
hard and compact; solid. [6 definitions] |
| firm2 |
a business organization, often an unincorporated one. |
| firmament |
the entire arch of the sky; heavens. |
| firmly |
in a way that uses some strength; not lightly. [2 definitions] |
| firmware |
a computer program or set of functions stored on a ROM chip, rather than in software. |
| first |
indicating rank or position before all others. [8 definitions] |
| first aid |
emergency medical treatment for injury or sudden illness, administered before regular medical care or more thorough treatment can be obtained. |
| first-aid kit |
a kit containing supplies for administering emergency treatment of injuries, poisoning, or sudden illness. It generally contains such things as bandages, antiseptics, and painkillers. |
| first base |
in counterclockwise order from home plate, the first of three bases marking the infield of a baseball diamond. [2 definitions] |
| first baseman |
in baseball, the player whose position is at first base when the other team is batting and whose primary function is to defend that base. |
| firstborn |
born before any other child or offspring of a parent or parents. [2 definitions] |
| first cause |
a primary or original source, independent of, and not caused by, anything else. [2 definitions] |
| first class |
the best, finest, or highest in quality, class, grade, or rank. [3 definitions] |