| 单词 | cosh |
| 释义 | Word Frequency cosh 1(kɒʃ) British noun 1. a blunt weapon, often made of hard rubber; bludgeon 2. an attack with such a weapon verb (transitive) 3. to hit with such a weapon, esp on the head Word origin C19: from Romany kosh, from koshter skewer, stickWord Frequency cosh 2(kɒʃ, ˈkɒsˈeɪtʃ) noun hyperbolic cosine; a hyperbolic function, cosh z =1⁄2(ez + e –z), related to cosine by the expression cosh i z = cos z, where i = √–1 Word origin C19: from cos(ine) + h(yperbolic) |
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