Nam ob is the traditional Thai term for scented water used in Songkran blessings.
Nam ob is perfumed water, traditionally associated with fragrances such as flowers and aromatic ingredients. During Songkran, scented water can be used in respectful rituals, including pouring it over the hands of elders or over Buddha images.
This practice differs from the energetic street water fights that dominate many modern festival photographs. The ritual use of scented water is gentler and carries meanings of respect, purification, blessing, and renewal.
Nam ob should not be confused with nam pla, which means fish sauce, or nam prik, a family of Thai chili-based relishes. Those are food terms rather than names for Songkran blessing water.