The grand Oak, King of the Forest, grows slowly. Its dome shape and clean, straight trunk make it known on the horizon. Its wood is hard and tough and it burns slowly. Acorns when processed feed humans. Druids taught lessons under the Oak. Duir means doorway. This tree indicates protection - a doorway to mysteries and strengths.
Physical: A hands-on approach will nurture the skills you wish to have. Step through the door, one learns by doing.
Mental: You have accumulated acorns of wisdom, the time for dropping and sharing your wisdom is here.
Spiritual: You as a teacher or student must be tough and resilient despite life's unpredictability as an Oak is to the bolt of lightening. Strong and wise.