unauthorized taxi; illegal taxi

the color white / (by extension) innocence / (go) a white go stone / something unwritten / (colloquial) the white team in a 紅白 (kōhaku) group / (colloquial) an unlicensed prostitute

(historical) taxi that run in the city with 1 yen. Those taxis are appeared in 1924 and soon disappeared. / (by extension, historical) any taxi that is cruising around looking for passengers.

(slang) to ride a taxi

the field, profession, and study of law. The rule of law / a statute / an act of a legislature

prohibition

to ban; to prohibit

beluga whale; white whale (Delphinapterus leucas)

(law) a juristic act.

(law) a law firm, a law office