edicinally the Holly can be used to fight fevers and also to ward off jaundice. This being so it is more a preventative than a cure. The berries as mentioned earlier are poisonous so they are not used in any medicinal manner.
Holly berries can however be used for deviation to predict the winter weather to come. It the Holly bore berries profusely, a hard winter was said to be in store. The reason for this was that the multitudes of berries were provided by Mother Nature as a means to provide for the birds and other animals who sought them out as food. A small number of berries meant that the weather would be mild enough for the wildlife to find food elsewhere.
Holly is one of the nine sacred woods for a sabbat fire in which it represents justice. The power or attributes it gives are courage, death, divinity, guidance, healing, intelligence, luck, protection, rebirth, and unity. It is often used in any work which attracts good luck, dream work (especially divination through dreams), and protection spells.