From Longman Dictionary of Contemporary Englishpinkopink‧o /ˈpɪŋkəʊ $ -koʊ/ noun (plural pinkos) [countable] 1 American EnglishPPGINSULT an insulting word for a socialist or communist2 British EnglishPPG someone who has slightly left-wing ideas, but is not a strong believer in socialism → red —pinko adjective pinko liberals
Examples from the Corpus
pinko• Miller refused to testify, and paid for his irreverence by being officially labeled a pinko.• It's sunglasses all round as our richly-coiffed Tory front benchers try to fight eye-strain caused by their chrome-domed pinko opponents. 