This property defines the Unicodes which belongs to Meroitic Hieroglyphs block
Characters like 𐦀,𐦁,𐦂, etc. are listed under Meroitic Hieroglyphs Block.
32 Characters are present in Meroitic Hieroglyphs Block starting with the Unicode point U+10980 that represents the character 𐦀.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.