| first person |
in grammar, a category of pronouns, inflections, and the like indicating the writer or speaker of a sentence or the group of which he or she is a member. [3 definitions] |
| first quarter |
the phase of the moon's reflection of sunlight that occurs when the right half of the moon, as seen from the Northern Hemisphere, is radiant, about one week after the new moon. |
| first sergeant |
the senior noncommissioned officer in the U.S. Army, Air Force, or Marines who is responsible for personnel and administration of a company, squadron, or other unit. |
| first strike |
a surprise offensive attack using nuclear weapons, intended to eliminate an enemy's ability to strike back. |
| first water |
the highest degree of fineness or purity in a diamond or pearl. [2 definitions] |
| first-aid kit |
a container that holds supplies such as bandages and medicine for treating things like insect bites, wounds, and sudden illness. |
| first-class |
of the highest in quality; best. [2 definitions] |
| first-degree |
of or concerning the lowest or first level in a series of levels or intensities. [2 definitions] |
| first-degree burn |
the level of burn that produces pain, heat, and reddening of the skin but no blistering or charring. |
| first-degree murder |
a premeditated murder, carried out with deliberate intention to kill. |
| first-generation |
denoting a person who is a naturalized citizen of a nation, having immigrated from another country. [2 definitions] |
| first-rate |
of the highest quality; excellent. |
| first-string |
of, pertaining to, or being a principal member or members of a team. |
| get to first base |
to complete the first step towards reaching a goal; begin to succeed. |
| private first class |
a soldier in the U.S. Army or Marine Corps ranking below a corporal and above a private. |
| sergeant first class |
in the U.S. Army, a noncommissioned officer who ranks above a staff sergeant and below a master sergeant. |