圍
イ, かこ.む, かこ.う, かこ.い
enclose, surround, encircle, preserve, store, keep
JLPT0 G13 S0 F5000
As per 韋# (go around) + 囗 circular enclosure → surrounding/encircling enclosure → *surround/encircle*; *enclose* → *besiege* (← besiege a town or citadel by surrounding it).
[Full Kanji Etymology List]