- Altar - an area, typically a desk or table, designated for religious worship. Used by many pagans, witches, and Wiccans, but not all.
- Amulet - an object, typically worn, which provides magical protection.
- Asperge - a way to flick water around a place. Often by wetting a bunch of herbs and flicking off the water droplets around a room.
- Banish - to send away, often a spiritual entity.
- Book of Shadows - a journal kept by witches to record their magical and/or spiritual journey. Gardnerian Wiccans refer to the BoS of Gerald Gardner, but many witches keep their own book.
- Charge/Charging - imbuing an object with your energy and magical intent.
- Circle - a sacred space, drawn both physically and spiritually, which also offers protection during ritual, spell work, and divination. Not used by all witches.
- Coven - a group of witches, usually three or more, who join together to work magic, conduct rituals, and/or worship their chosen deities.
- Curse - a spell designed to bring misfortune, pain, or malice upon or against another person.
- Divination - a technique or method used to predict the future, find a solution to a problem, or communicate with the divine. Many methods exist, such as Tarot, scrying, tea leaf reading, palm reading, etc.
- Diviner - a person who practices divination.
- Elements - the four spiritual Elements of Earth, Air, Water, and Fire, often talked about with the fifth Element of Spirit.
- Enchant - to give an object a magical property or purpose.
- Familiar - a spirit, often but not always in animal form, that guides, protects, and helps a witch upon their path.
- Grimoire - a ‘magical textbook’. Typically refers to classical medieval grimoires which usually contained instructions on the summoning, binding, and banishing of demons, among other things. These days, many witches refer to their own Book’s as grimoires, to distance and differentiate them from the Wiccan faith.
- Grounding - a method of dispersing excess magical energy and/or calming oneself.
- Offering - a gift made to a deity or spirit.
- Pagan/Paganism - an umbrella term for pre-Christian, nature based religion. Often but not always Euro-centric. Not all witches are pagan, not all pagans are witches.
- Pentacle - five pointed star inside a circle.
- Pentagram - five pointed star.
- Poppet - a doll made to represent a person. Typically but not always made of cloth, paper, clay, wood, or wax.
- Potion - any food or drink prepared with magical intent. Often but not always edible.
- Psychic - a person who has or can have access to information obtained outside the five natural senses. A natural or innate ability, rather than a practiced technique like divination.
- Rite - an action, which when performed in conjunction with other rites, form a ritual. E.g. a typical Wiccan ritual might consist of the Rite of Opening Sacred Space, the Rite of Self Blessing, the Rite or Closing Sacred Space, and the Rite of Wine and Cakes.
- Ritual - a series of actions performed ceremoniously, typically for religious or spiritual reasons or celebrations.
- Sigil - a symbol, drawing, or design created and charged with magical intent.
- Shielding - protecting yourself, often using no more than your own magical energy, against psychic/magical attack or negative influences.
- Solitary - a witch who works alone.
- Spell - a series of actions performed with intent and energy to bring about change. Often but not always involving the uses of herbs, crystals, candles, and chants.
- Summon - to call up or bring forth, often a spiritual entity.
- Talisman - an object, typically worn, which provides a benefit to it’s wearer, such as love, luck, power, wisdom, etc.
- Wicca - a religion, typically following the worship of a goddess and a god, and celebrating the turning of the seasons and the Wheel of the Year. Created, for all intents and purposes, by Gerald Gardner in the 1950s in England.
- Witch - someone who practices witchcraft. May be male, female, or any variation thereupon. May be straight, gay, bi, pan, asexual, or any variation thereupon. May be a follower of any religion at all, or of none. May be spiritual, agnostic, or atheist.
- Witchcraft - the use and manipulation of energy or magic to create a desired change or effect. Typically through the use of spells, rituals, potions, sigils, etc.
Disclaimer: these are the definitions that I have found found are most commonly used, but are certainly not the only definitions. Many other witches could have many other meanings for these terms. Nor are these the only terms used in the witchcraft community; these are merely some of the more common.
I have included links to Wikipedia articles on some of the terms, which give a good overview of the subject and offer further reading.
