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

一礼[ichirei] bow (salute, greeting)
家礼[kerai] retainer
回礼[kairei] going from door to door greeting relatives and friends
割礼[katsurei] circumcision (male)
儀礼[girei] etiquette

儀礼的[gireiteki] formal
儀礼兵[gireihei] guard of honor
虚礼[kyorei] empty (useless) formalities
偶像礼拝[guuzoureihai] idolatry
軍礼[gunrei] military honors