Cambridge Dictionaryでの「swinger」の意味 a person who dresses in a fashionable way and who goes to a lot of parties and nightclubs, or someone who is willing to have sex often with many different people (おしゃれな服を着て、たくさんのパーティーやナイトクラブに行く人、または多くの異なる人々と頻繁にセックスをしたいと思っている人)