Here is a little bit of info iv picked up while reading "the wicca bible"
These days, wicca refers to a set of practices, beliefs and traditions associated with people who call themselves witches. Witches called themselves wicca not because they think they know more or better than anyone else, but because historically this expression referred to people who work with nature and magic. In wicca, wisdom is an aspiration than a starting point, and learning is an ongoing process. This requires those who wish to join the rank of the wise to acknowledge and accept the constant processes of change and development both within us and within the world around us. The adaptability is appropriate as, apparently, a secondary mean of the word wicca was bendy or wiggly.
On the subject of meaning, there is a distinction between the way that the word wicca is interpreted in Britain and its customary usage in north America . References to wicca in Britain have traditionally alluded to a specific initiatory system of witchcraft as practised within covens that follow either.