An agency of the United Nations responsible for international public health

In a state of deep thought that makes the thinker appear disconnected from reality.

(idiomatic) in plain view; clearly visible

(idiomatic) To improve one's social or financial position.

(athletics, slang) the Olympic champion male sprinter in the men's 100-metre dash sprint race athletics track and field event

(masculine, athletics, slang) the Olympic champion male athlete in the men's decathlon athletics track and field sport

(athletics, slang) the Olympic champion female sprinter in the women's 100-metre dash sprint race athletics track and field event

simple past tense and past participle of have the world by the tail

Third-person singular simple present indicative form of have the world by the tail

Third-person singular simple present indicative form of have the world by the bag