Special Note: At the risk of belabouring the extremely obvious, this page is a work in progress, with quite a distance to go before it sleeps.
Definitions, Premisses and Info

Y Tylwyth Teg - When used in reference to a MetaPhysical Orientation as to Tradition, Culture or Preferred Flavour, is primarily defined, usually selfdefined by its members and/or adherents holding Celebration of the Mysteries of the Welsh Pantheon and the Sidhe, historical lineage and religious equality as primary or critical parameters of their Spiritual Paradigm. Y Tylwyth Teg is the American branch of Dynion Mwyn, a Welsh tradition named for the faery folk.

Yamas (One of the Eight Limbs of Raja Yoga from the traditions of the Indus Valley) - The Yamas or restraints (Don'ts) are divided into five moral injunctions, aimed at destroying the lower nature. They should all be practiced and developed by the letter but also more importantly in the spirit. They should all be practiced in word, thought and deed.
Ahimsa or non-violence
Satyam or non-lying
Brahmacharya or non-excess in all things (control of all senses).
Asteya or non-stealing
Aparigraha or non-covetousness

Year of the Lady Dating - A System of Dating used in Garden of Life in which the Year changes on the Vernal Equinox and for reference 21 December 1973 would fall in The Year of the Lady 11339.

Yin and Yang - Taoist concept, used in the New Age movement, holding that the universe consists of two opposite energy forces (positive/negative; male/female, etc.). Both are necessary and both must be harmonized for proper function. This Yin and Yang also flow through the human body so that a balance is required to maintain health. Many New Age holistic health techniques, such as acupuncture, are based on attempts to balance this alleged energy or chi. When all is balanced, the Yin and Yang harmonize and the body works properly.

Yoga (from the traditions of the Indus Valley) - An ancient practice for bringing body and mind into harmony using meditation, physical postures, breathing and exercise. There are four main paths of Yoga - Karma Yoga, Bhakti Yoga, Jnana Yoga and Raja Yoga. Each is suited to a different temperament or approach to life. A balanced Yogic Sadhana (spiritual discipline) includes Asanas (Beneficent Positioning and Exercise of the Body), Pranayama (Focused Beneficial Breathing Techniques), Savasana (Efficacious and Beneficial Relaxation), (Proper Diet) and (Proper Consciousness), stimulated by Vedanta (Positive Thinking) and Dhyana (Meditation). The paths lead ultimately to the same destination - to Attainment of Unification within the Divine Forces - and the lessons of each of them need to be integrated if true wisdom is to be attained. They are usually categorized as: Karma Yoga, Union with the Path of Action, Ethics, Roots; Bhakti Yoga, Union with the Path of Divine Love, Devotion, Stem; Raja Yoga, Union with the Path of Physical and Mental Control, Meditation, Flowers; and Jnana Yoga, Union with the Path of Knowledge or Wisdom, Enlightenment, Fruit.

Yoni - When the term Yoni [in Aleister Crowley's 777 Tables of Correspondences considered as the Outer Robe of Concealment, key number 3] is used in reference to a Magickal Implement, Sacred Object, Ceremonial Tool and/or Focus it generally refers to