'Jiāo shuǐ' literally means 'glue water' — combining 胶 (jiāo), meaning 'glue' or 'gum', and 水 (shuǐ), meaning 'water'. It refers specifically to liquid adhesive, the kind commonly used for paper, cardboard, wood, or light crafts. Unlike solid glue sticks or industrial adhesives, 胶水 implies a viscous, pourable, often clear or milky liquid that dries clear and bonds porous materials.

This word is widely used in everyday contexts — from school supplies and home repairs to office work and DIY projects. It’s neutral in register and appropriate for both children and adults. While some types of glue (e.g., epoxy or super glue) have more technical names, 胶水 is the default term for common household liquid glue, especially the white PVA variety sold in small bottles or tubes.