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

一再[issai] once or twice
経営再建[keieisaiken] management reorganization
再び[futatabi] again
再び取る[futatabitoru] to reassume
再び述べる[futatabinoberu] to restate

再び導入[futatabidounyuu] reintroduction
再案[saian] second plan
再演[saien] another showing (of a play)
再縁[saien] second marriage