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

異星人[iseijin] alien (from another planet)
一つ星[hitotsuboshi] evening star
１等星[ittousei] first-magnitude star
衛星[eisei] satellite
衛星地球局[eiseichikyuukyoku] (satellite) earth station

衛星放送[eiseihousou] satellite broadcasting
火星[kasei] Mars (planet)
火星人[kaseijin] Martian
海王星[kaiousei] Neptune (planet)
巨星[kyosei] giant star

是等[korera] these
其等[sorera] those (near the second person)
等閑[naozari] neglect
悪平等[akubyoudou] misguided equality
位階勲等[ikaikuntou] court rank and honors

一等[ittou] first-class
１等軍曹[ittougunsou] sergeant first-class
１等国[ittoukoku] first-class power
１等車[ittousha] first-class carriage (coach)
１等賞[ittoushou] first place prize