(derogatory) An upstart or newcomer; nouveau riche; parvenu; an ambitious, brash or arrogant person who has yet to integrate with his or her new social group.

(idiomatic) A very important person, especially the highest-ranking individual in an organization. / (idiomatic) Some item of high value, especially a top prize or reward.

Third-person singular simple present indicative form of do it

The formation of tubercules.