A mead made with fruit is called a Melomel, although some melomels are better known by other names (e.g., cyser, pyment). Styles within the Melomel category are divided to assist with judging, and should be thought of more as competition entry categories than actual styles. M2E Other Fruit Mead is for types of fruit not specifically listed or for melomels that mix fruit from multiple styles.
In the context of this category, the term fruit is defined as having the same usage as in the preamble to category 29 Fruit Beer in the 2021 BJCP Beer Style Guidelines. Category M1 describes the base character expected from dry, semi-sweet, and sweet meads.

Comments
Examples with a relatively low honey character may be evaluated better as a C3C Experimental Cider. A spiced cyser should be entered as a M3C Fruit and Spice Mead. A cyser with additional non-pome fruit should be entered as an M2E Other Fruit Mead. A cyser with additional ingredients should be entered as an M4F Experimental Mead.