Dreaming about a drinking glass may symbolize your feelings about nourishment, hydration, or sustenance. A drinking glass may also represent your feelings about your own needs or the needs of others.
If you dream that you are drinking water from a glass and it is the most refreshing and satisfying drink you have ever had, it may symbolize your feelings of nourishment and hydration. The dream may be a reflection of your desire for physical or emotional sustenance in your life.
If you dream that you are at a party and someone hands you a glass of punch, but when you take a drink, you realize that it is spiked with alcohol, it may symbolize your feelings of vulnerability or susceptibility to the influence of others. Also, the dream may be a manifestation of your unconscious mind trying to process and resolve any feelings of discomfort or anxiety related to social situations or peer pressure.