Androids 
To see or dream that you are an android indicates that you are feeling stagnant and bored with some aspect of your life. It may also mean that you are too impulsive when making decisions.
Offspring
To dream of your offspring stands for exuberance and happy moments.
Waterfall
To dream of a waterfall is a symbol of release. Whatever you have been holding in during your waking life will soon be released. The waterfall is a physical representation of your life's desires and goals. Clear, cool waterfalls indicate a new lease on life.
If you dream of a waterfall cascading over you, consider your emotional state. Are you feeling overwhelmed? Have you been holding back your feelings? Face your feelings and your emotions as a step towards finding peace.
Watermill
To dream of a watermill is a reminder that you always have options. By carefully considering a particular problem from each angle, you may find a new solution. The watermill may also serve as a reminder that slow and steady progress towards your goals is the best course of action.
Water Gun
To spray someone with a water gun in a dream represents your need to express your emotions toward that person. Your true feelings might be misinterpreted as your anger or love is simply creating an annoyance in the other person.
Water Lily
The water lily is an ominous symbol. There will be a death in your life. Much sorrow and sadness will soon be yours.
Watermelon
To dream of a watermelon symbolizes your inner passion. You attack life with a furious passion. You love greatly, desire deeply, and lust for life of things around you. Pregnant or menstruating women often dream of the watermelon, or other such large fruits. Alternatively, the watermelon is a symbol for fun summer times. You are relaxed and at ease.
Waterslide
To dream that a waterslide has swept you away may indicate that you have allowed your emotions to get the best of you and are emotionally overwhelmed. It may also be an indication that you are getting in touch with your inner self. Conversely, it is an indication that you are not questioning your actions or putting proper thought into them. You are acting without forethought.
Salt Water
To dream of salty water on your tongue may indicate a need to release sadness and the physically shed tears.
To be standing in water suggests that an old emotional wound may be holding you back from possible joy. It also cautions acceptance of the past, especially of things that cannot be changed.
Water Hose
To be hit with a water hose in a dream symbolizes a surprise situation. Consider the phrase "getting hosed" where you have been overwhelmed or exhausted by a bad situation.
Alternatively, a water hose in a dream may symbolize sex or the male sex organ.