|"For every Mighty Oak there was a Nut that stood it's ground"|
This is also a Nordic and Celtic symbol of life, fertility, and immortality.
Many Druids consumed acorns, believing them to have prophetic qualities. The acorn was sacred to the god Thor. His Tree of Life was oak.
The acorn as a heraldic symbol indicates independence to its bearer. Sometimes, an acorn sprig is used as a crest.