裏うら鬼き門もんMeaningsNoun1. unlucky quarter (southwest)Kanji used裏backside鬼oni門gatePitch accentうらきもんComposed of裏うらopposite side; bottom; other side; side hidden from view; undersurface; reverse side; rear; back; behind; lining; …Noun鬼き門もんthe northeastern (unlucky) direction; person or thing to be avoided; the demon's gate; weak point; Achilles' heelNoun