DICTIONARY
Sign - To see a sign in your dream indicates that you need help. You need some direction and guidance in your life. Pay attention to what the sign says and what it is pointing you to do. Perhaps the dream is highlighting "a sign of the times".
Sign Language - To communicate in sign language in your dream suggests that you need to find other ways to get your opinion heard since no one is listening to you.
Sign Twirler - To see a sign twirler in your dream refers to a message from your subconscious that you need to listen to or follow. The sign may be trying to point you in the direction that you need to go. Dreaming that you are a sign twirler means that there is a message or feeling that you are trying to get across. Perhaps you need to be more direct about your desires and wishes.
Signature - To see your signature in your dream represents your agreement and acceptance for a particular condition or situation. It is also an indication of your seal of approval. You are taking charge and accepting responsibility of a situation. meanings by DreamMoods.com
Silence - To dream that you are silent indicates an inability to express yourself. You may feel inhibited in voicing your opinion and how you really feel. Alternatively, the dream refers to a situation in your waking life that has left you speechless. To dream that someone is silent means that you are unsure about this person's intentions. Perhaps you are still trying to understand them. There may be a sense of uneasiness.
Silhouette - To see a silhouette in your dream represents some aspect of your life that is not clearly defined. It may also refer to the undeveloped or unacknowledged aspects of your character.
Silk - To see or feel silk in your dream represents luxury, smoothness, and softness. To dream that you are wearing silk suggests prestige. You will never lack the necessities of life.
Silly String - To see silly string in your dream implies that you are trying to divert attention away from a problem. You are covering up your true feelings.
Silo - To see a silo in your dream suggests that you need to save money. Perhaps you are wasting your money on frivolous things and need to think about saving up.
Silver - To see silver in your dream symbolizes the moon, intuition and the feminine aspects of yourself. It signifies tranquility and understated confidence.