1. (尤指酒后)伤感的,多愁善感的
If you describe someone as maudlin, you mean that they are being sad and sentimental in a foolish way, perhaps because of drinking alcohol.
2. (歌曲、书、电影等)伤感的,凄哀的
If you describe a song, book, or film as maudlin, you are criticizing it for being very sentimental.