The Boline is a knife in the druid and Wiccan tradition. Its specific symbolism is held within its blade, which is shaped like a crescent moon and silver in colour. The Boline usually has a white handle, also in deference to the moon. This Boline is a practical ceremonial tool often used for cutting herbs either for magical or simply for cooking. In the case of the druid, it is also used for cutting mistletoe directly from the tree.
Nozedar Adele, The element encyclopaedia of secret signs and symbols, 2008, Boline, p 26