枕 (zhěn) is the Chinese word for "pillow," a common household item used to support the head while sleeping. Pillows come in various shapes, sizes, and materials, including cotton, memory foam, and down. They help improve sleep quality by providing comfort and proper alignment for the neck and spine. In traditional Chinese culture, pillows have also held symbolic meanings. For example, some pillows are designed with specific patterns or materials believed to promote good dreams or health. Additionally, 枕头 (zhěntóu) is a term often used interchangeably with 枕, referring to the same object in everyday conversation.