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

悪例[akurei] bad example
異例[irei] exception
違例[irei] unconventionality
一例[ichirei] example
引例[inrei] quotation

佳例[karei] good example
嘉例[karei] happy precedent
家例[karei] family custom
勘例[kanrei] considering old precedents
慣例[kanrei] custom