B

[big as life] or [large as life]  {adj. phr.}

1. or [life-size]

The same size as the living person or thing.

The statue of Jefferson was big as life.

The characters on the screen were life-size.

2. or [big as life and twice as natural]  […]

[big cheese] or [big gun] or [big shot] or [big wheel] or [big wig]  {n.},  {slang}

An important person; a leader; a high official; a person of high rank.

Bill had been a big shot in high school.

John wanted to be the big cheese in his club.

 […]

[big daddy]  {n.},  {slang},  {informal}

The most important, largest thing, person or animal in a congregation of similar persons, animals, or objects.

The whale is the big daddy of everything that swims in the ocean.

* /The H-bomb is the big daddy  […]

[big deal]  {interj.},  {slang},  {informal} (loud stress on the word "deal")

Trifles; an unimportant, unimpressive thing or matter.

[big frog in a small pond]  {n. phr.},  {informal}

An important person in a small place or position; someone who is respected and honored in a small company, school, or city; a leader in a small group.

* /As company president, he had been a big frog in a  […]

[big hand]  {n.}

Loud and enthusiastic applause.

[big head]  {n.},  {informal}

Too high an opinion of your own ability or importance; conceit.

When Jack was elected captain of the team, it gave him a big head.

Compare: [SWELLED HEAD].

[big house]  {n.}

A large jail or prison.

[big lie, the]  {n.},  {informal}

A major, deliberate misrepresentation of some important issue made on the assumption that a bold, gross lie is psychologically more believable than a timid, minor one.

* /We all heard the big lie during the Watergate  […]