封
フウ, ホウ

seal, closing

JLPT2 G7 S9 F1143

寸 here an abbreviated form of 付 (set in place) + 圭# (cone-shaped) → conical object set in place → *mound*; *tomb*; *confine* → *fief* (← place where a lord declares his sovereignty over a territory; compare 邦). *Seal* is a borrowed meaning.

[Full Kanji Etymology List]