Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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at first on the first occasion or in the beginning.
at first blush when first observed; at first glance.
cast the first stone to be the first to accuse someone of wrongdoing.
first aid emergency medical help given to a hurt or sick person while waiting for a doctor.
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 while the other team is batting and whose primary function is to defend that base.
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]
first cousin the offspring of one's uncle or aunt.
first finger the finger next to the thumb; forefinger; index finger.
first floor in American English, the ground floor. In British English, the floor above the ground floor.
first lady (often cap.) the wife or official hostess of a chief executive, esp. of the U.S. president. [2 definitions]
first lieutenant a commissioned officer of the U.S. Army, Air Force, or Marines, ranking below a captain and above a second lieutenant.
first light the beginning of daylight; daybreak; dawn.
first mate the officer of a merchant ship second in rank to the captain; mate.
first mortgage a primary lien against a piece of property that takes precedence in case of default over all other mortgages or liens except those given priority by law, such as real estate taxes.
first night the opening performance of a play, opera, movie, or the like, or the night on which this occurs.
first off at once; immediately.
first offender a person convicted for the first time of an offense against the law.
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]