メイ, ミョウ, な, な, と

name, noted, distinguished, reputation

JLPT5 G1 S6 F177

here a variant form of the element in (manifest the hidden) and serving as an abbreviated form# of the entire character + mouth → state one's *name* upon being challenged (by a guard), revealing oneself → *repute*; *famous*.

[Full Kanji Etymology List]