The acorn is the seed of the mighty oak tree; it symbolizes potential and strength. It is also a Nordic and Celtic symbol of life, fertility, and immortality. The acorn as a heraldic symbol may indicate independence to its bearer. Oak leaves also represent strength, stability or nobility. When oak leaves and acorns are combined, the entire symbol can stand for power, authority or victory.
Oakisle show leashes have an acorn bead knotted into the handle.