pecker/ˈpekə(r); `pɛkɚ/ n1 (US sl 俚) penis 阴茎.2 (idm 习语) ,keep one's `pecker up (Brit infml 口) remain cheerful, esp in spite of difficulties 保持乐观（尤指不惧所处的困难）.
牛津英汉双解词典