Definition of "magickal"

You must decide for yourself whether a new, additional name will help or hinder your magickal growth.

1990, “Amber K”, in True Magick: A Beginner's Guide

What magickal techniques do you use that work well for you?

2002, Joyce Higginbotham, Paganism: An Introduction to Earth-centered Religions

You can even use it as a seal on your magickal correspondence.

2003, Denise Zimmermann, Katherine Gleason, The Complete Idiot's Guide to Wicca and Witchcraft