Meaning: こうがいn. (Kanji=公害) public nuisance, element that is unacceptable to the public as a whole; pollution, contaminationn. (Kanji=口外) disclosure, revelation, exposuren. (Kanji=口蓋) palate, roof of mouthn. (Kanji=校外) outside of schooln. (Kanji=梗概) outline, summary, synopsis; digest, abridgmentn. (Kanji=構外) outside the premisesn. (Kanji=郊外) suburb, environs, residential area lying on the outskirts of a city or townn. (Kanji=鉱害) pollution in a mine (i.e. minerals, coal, etc.)v. (Kanji=口外する) disclose, expose; tell