F

[firebug]  {n.}

An arsonist; one who willfully sets fire to property.

[firing squad]  {n.}

A group of soldiers chosen to shoot a prisoner to death or to fire shots over a grave as a tribute.

A dictator often sends his enemies before a firing squad.

[first]

See:

[AT FIRST BLUSH],

[AT FIRST SIGHT],

[CAST THE FIRST STONE],

[GET TO FIRST BASE] or [REACH FIRST BASE],

[IN THE FIRST PLACE],

[OF THE FIRST WATER].

[firsthand]  {adj.}

Fresh; genuine; from the original source.

[first and foremost]  {adv. phr.}

As the most important thing; first.

First and foremost they needed food.

I want you to remember to pay that bill first and foremost.

[first and last]  {adv. phr.}

Most noticeably; all the time; chiefly.

He was first and last a school teacher.

Steven joined the army because first and last he wanted to help his country.

Syn.: [ABOVE ALL].

[first base]  {n. phr.}

1. The base that must be touched first by a baseball player after batting.

He got to first base on four balls.

2. See: [GET TO FIRST BASE].

[first class]  {n.}

1. The first rank; the highest class; the best group.

The pianist was quite good but he was not in the first class.

2. The most expensive or comfortable class of travel; the best or one of the best groups in which to travel,  […]

[first-class] (1)  {adj.}

1. Of the highest class or best kind; excellent; first-rate.

Jane did a first-class job of repairing the coat.

It was a first-class TV program.

Compare: [TOP-NOTCH].

2. Of the best or most expensive class of  […]

[first-class] (2)  {adv.}

With the best material; in the best or most expensive way.

When Mr. Van Smith goes anywhere he always travels first-class.