Analysis of information sources in references of the Wikipedia article "Lunin mesec" in Slovenian language version.
In medieval times, the part of the Moon's orbit south of the ecliptic was known as the 'dragon' (which devoured the Moon during eclipses) and from this we get the terminology 'dragon's head' for the ascending node and 'dragon's tail' for the descending node. … The periods between successive nodes has, over time, been termed the dracontic, draconic and draconitic month, the words deriving from the Greek for 'dragon'.
The nodical month is the time in which the Moon accomplishes a revolution with respect to her nodes, the line of which is also movable.