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

御新香[oshinko] pickled vegetables
新嘉坡[shingapooru] Singapore
スポーツ新聞[supootsushinbun] sporting newspaper
新西蘭[nyuujiirando] New Zealand
悪徳新聞[akutokushinbun] irresponsible newspaper

維新[ishin] restoration (e.g. Meiji)
一新[isshin] complete change
一新紀元[isshinkigen] new era
改新[kaishin] reformation
革新[kakushin] reform