It may or may not be the letter z.
It's probably a rotated "m" shape which is a common Latin abbreviation symbol that looks like "z" but is used at the ends of words. It has a variety of meanings, but two of the more common expansions are "em" or "um". The line over the two letters is a macron, an apostrophe symbol.
It does not look like a medieval 8, not at all and medieval 8 was never written with a tail.
Here are some examples of 8 from the 14th century. The ones from the 15th century are basically the same. Note the loops are generally quite wide, not squished like the last letter in luc'm
![[Image: Medieval8.png]](https://voynichportal.com/wp-content/uploads/2018/11/Medieval8.png)
It's probably a rotated "m" shape which is a common Latin abbreviation symbol that looks like "z" but is used at the ends of words. It has a variety of meanings, but two of the more common expansions are "em" or "um". The line over the two letters is a macron, an apostrophe symbol.
It does not look like a medieval 8, not at all and medieval 8 was never written with a tail.
Here are some examples of 8 from the 14th century. The ones from the 15th century are basically the same. Note the loops are generally quite wide, not squished like the last letter in luc'm