I thought it would be helpful to start a glossary on here for terms that may or may not need explaining. If you’d like me to define anything not listed, please leave a comment.
Esbat: A ritual or coven meeting other than the Sabbats. Full Moons and New Moon are frequently referred to as Esbats.
Void of Course: When the Moon is “void of course,” it means that it has exited the last major aspect of the previous sign, but is not yet in the first solid aspect of the next sign. Sometimes the process takes minutes, other times it takes hours; doing magick during this time can be fruitless. Marked “v/c” on astrologically-minded calendars.