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

比律賓[firippin] Philippines
一律[ichiritsu] evenness
一律減反[ichiritsugentan] reduction in area of rice under cultivation
韻律[inritsu] rhythm
黄金律[ougonritsu] The Golden Rule ("do unto others as you would have them do unto you")

音律[onritsu] metre
戒律[kairitsu] (religious) precept
紀律[kiritsu] order
軍律[gunritsu] martial law
刑律[keiritsu] criminal law