Originally: an ambitious person. Now with the and plural agreement: those who are ambitious; ambitious people as a class.

A person who pursues (in various senses of the verb); = pursuer, n. Also in extended use. U.S. in later use.

A person who pursues an object or aim. Frequently with of.

A person aspiring or wishing to be something specified or implied. As a mock surname in literary sources. Cf. sense A. 1a(a). Obsolete.

gen. He who or that which climbs. Also figurative, esp. one who seeks continually to advance himself. Also attributive.

A person who is ruled by ambition; a highly ambitious person.

A person who follows or comes after; a follower; also, one who pursues. Obsolete.

a person who is, or has the potential to be, highly successful; cf. high-flyer, n. 3a.

A person who tries to emulate someone else, esp. a celebrity, in appearance and behaviour; a person who wants to belong to and tries to fit in with…