Dream Symbol
powder

Depends on what kind of powder, its purpose, and its context. For example:

• Destruction, if the powder is something that has been pulverized
• Convenience, if the powder is something that is instant or ready-to-mix
• Something that is preserved or it in a form that keeps well over time
• The specific purpose of the powder, such as gun powder representing explosiveness or volatility, or talcum powder representing cleanliness or freshness