What is the meaning of 大夫?

(medical) doctor

grandee, official, minister

large, dry field

a surname

an office in Zhou Dynasty, China.

substitutive style of high ranked courtier, particularly officers in the 5th rank (五位).

(historical, in Japan, also daibu) head of shoku(職) or bō(坊), administrative departments of the imperial court.

karō (家老)

synonym of 松 (matsu, “pine tree”) (based in an episode Qin Shi Huangdi or the First Emperor of Qin granted a pine tree the dignity of Taifu [1.])

style of Shinto shrine headmaster.

(in Noh-theater) iemoto or the head master of shite (仕手) acting family.

(in jōruri/bunraku-theater) style of narrators and shamisen players.

highest ranked prostitutes at the officially approved prostitution areas, such as, Yoshiwara.

leading actor in a manzai pair

style of Shinto shrine headmaster

Source: wiktionary.org