What Does #OOTN Mean The #OOTN Meaning on Social Mediaootn heart symbolism is a term used to describe a attire that is put on in the night or for special occasions. represents love, passion, and affection. Therefore, an ootn showcases a stylish and captivating outfit that mirrors the affection for clothing and enjoys the evening vibe. Wearing an ootn can elevate your confidence, make an impression, and exude sophistication and charm. Whether it's a glamorous dress or a chic suit, the ootn ensures that you catch everyone's attention and leave a lasting impression at any night event.