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

御目出度う御座います[omedetougozaimasu] congratulations
一座[ichiza] party
円座[enza] sitting in circle
奥座敷[okuzashiki] inner parlor
横座標[ouzahyou] abscissa

王座[ouza] throne
おうし座[oushiza] Taurus (constellation)
おひつじ座[ohitsujiza] Aries (constellation)
おとめ座[otomeza] Virgo (constellation)
下座[geza] squatting