The state of having invested heavily in just one area. / The state of having devoted all of one’s resources to one thing.

(idiomatic) All over the place; everywhere.

(Internet slang, humorous) Used to tout victory over an opponent, or simply as a humorous catchphrase.

A truly good outcome benefits all.

(idiomatic) A person who has a competent grasp of many skills but who is not outstanding in any one.

(dated) rubbish, humbug

(idiomatic) Diversity is essential: the world would be incomplete if everyone were alike; an expression of surprise at a person or people's eccentricity.

(idiomatic, of an emotion) Very obvious, from someone's facial expression.

(humorous) goodbye, farewell

Nothing good lasts forever.