4. prohibit: vt. (prohibited; prohibiting) 禁止prohibit sb from doing sth: 禁止某人做……forbid sb from doing sth: forbid sb to do sth:ban sb from doing sth: ◆◆prohibition: [,prəuhiʹbiʃn] n. (1) [U] 禁止,阻止 (2) [C] 禁令,禁律① The law prohibits tobacconists from selling cigarettes to children. 法律禁止烟贩向儿童出售香烟。