ちょっと一杯[chottoippai] let's have a quick drink
ばつ一[batsuichi] being once divorced
一向[hitaburu] nothing but
サラダ一皿[saradahitosara] plate of salad

安全第一[anzendaiichi] safety first
一か八か[ichikabachika] sink or swim
一っ走り[hitoppashiri] spin (as in 'take a car for a spin')
一つ一つ[hitotsuhitotsu] one-by-one

一か八か[ichikabachika] sink or swim
嘘っ八[usoppachi] downright lie
嘘っ八百[usoppappyaku] full of lies
嘘八百[usohappyaku] full of lies
八釜しい[kamabisushii] noisy

口八丁[kuchihacchou] voluble
三十八度線[sanjuuhachidosen] the Thirty-eighth Parallel
四苦八苦[shikuhakku] being in dire distress
四通八達[shitsuuhattatsu] traffic network extending in all directions
四方八方[shihouhappou] in all directions

宇宙[uchuu] universe
宇宙ステーション[uchuusuteeshon] space station
宇宙学[uchuugaku] cosmology
宇宙基地[uchuukichi] space station
宇宙空間[uchuukuukan] outer space

宇宙食[uchuushoku] space food
宇宙人[uchuujin] space alien
宇宙線[uchuusen] cosmic ray
宇宙船[uchuusen] space ship
宇宙大爆発[uchuudaibakuhatsu] Big Bang (theory)

八紘[hakkou] the eight directions

八紘一宇[hakkouichiu] universal brotherhood