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

ちょっと一杯[chottoippai] let's have a quick drink
Ｗ杯[waarudokappu] World Cup (e.g. soccer)
一杯[ippai] amount necessary to fill a container (e.g. a cupful, spoonful, etc.)
一杯機嫌[ippaikigen] slight intoxication
金杯[kinpai] gold cup

銀杯[ginpai] silver cup
苦杯[kuhai] bitter experience (ordeal)
祝杯[shukuhai] toast
精一杯[seiippai] with all one's might
天皇杯[tennouhai] Emperor's trophy

遺精[isei] nocturnal emissions (of semen)
演算精度[enzanseido] operational precision
拡張倍精度[kakuchoubaiseido] extended double-precision
魚精[gyosei] milt
高精度[kouseido] high precision

射精[shasei] ejaculation
受精卵[juseiran] fertilized eggs
出精[shussei] diligence
出無精[debushou] stay at home
精しい[kuwashii] detailed