critical; gravely dangerous

crisis; grave danger

(telephony) voicemail

foreign enemy; external enemy

base; basis / base (physical bottom) / (linear algebra) basis

Short for カラーコンタクトレンズ (karā kontakuto renzu, “coloured contact lens”).

boys' high collar school uniform

Kyūjitai form of 区立 (“established by the ward”)

established by the ward

bark (of a tree) / the outer surface of a log after debarking / red pine, cedar, or similar wood that has been debarked, and then hammered into a fibrous consistency: wood wool, excelsior