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

億兆[okuchou] the people
吉兆[kicchou] lucky omen
凶兆[kyouchou] evil omen
衰兆[suichou] signs of decline
兆す[kizasu] to show signs (symptoms)

兆民[choumin] the whole nation
兆し[kizashi] signs
前兆[zenchou] omen
兆候[choukou] sign