A couple of months ago (or longer) how to search for NOTAMs changed in appearance on the FAA website. I combined both the TFR and Notam search in one youtube video.
Below is a link to a list of the abbreviations, but if you are in doubt you can always call 1-800-Wx-brief they can help you decifer
NOTAM is an abbreviation for Notice To AirMen. The Aeronautical Information Manual in Chapter 5-1-3 defines it as