ポコチンぽこちんFreq.FrequencyTop 100,000Meanings1nounwilly; penischildren's languageChildren's word for penis; used in informal, family, or nursery contexts. Not appropriate in formal or polite conversation.小ちいさい男おとこの子こが「ポコチン」と言いって笑わらった。The little boy said 'willy' and laughed.