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

旗魚[kajiki] marlin
旭旗[kyokki] rising sun flag
一旗[hitohata] flag
旗艦[kikan] flagship
旗手[kishu] standard-bearer

旗色[hatairo] situation
旗頭[hatagashira] leader
旗挙[hataage] raising an army
旗幟[kishi] flag