cipher (also cypher)

n 1 (a) [C, U] (method of) secret writing in which a set of letters or symbols is used to represent others; code 密码编写（的方法）; 密码: a message in cipher 密码信. (b) [C] message written in this way 用密码写的信息. (c) [C] key1(5b) to a secret message 密码索引; 密码检索本. 2 [C] the symbol 0, representing nought or zero 0（代表无或零的符号）; 零. 3 [C] any of the numbers from 1 to 9 从1至9的任何阿拉伯数字. 4 [C] (fig derog 比喻, 贬) person or thing of no importance 不重要的人或物: a mere cipher 无足轻重的人.

cigarette-holder, cigarette-lighter (also lighter), cigarette-paper, cinch, Cincinnati, cinder, cinder-track, Cinderella, cine-, cine-camera, cine-film, cine-projector, cineast, cinema, cinematic, cinematographer, cinematographic, cinematography, cinnamon, cipher, circa, circle, circlet, circuit, circuit training, circuit-breaker, circuitous, circuitously, circuity, circular, circular saw, circularity, circularize, -ise, circulate, circulation, circulatory, circumcise, circumcision, circumference, circumflex,