The symbol of a spider in dream represent the weaving of ties with others or the difficulty to escape to certain ties.
A spider in a dream can warn of weaving ties, which can direct us to the ability to weave ties with people. On the other hand, a spider weaving a web represents a negative mother complex that does not allow us to progress if we get caught in its web, which can be disastrous for us. For many people it represents a danger.
