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

異句同音[ikudouon] in concert
一句[ikku] phrase (verse, line)
一句詠む[ikkuyomu] to make up a haiku poem
引用句[inyouku] quotation
下の句[shimonoku] the last part of a poem or Bible verse

下句[geku] the last part of a poem or Bible verse
佳句[kaku] beautiful passage of literature
慣用句[kanyouku] idiomatic usage
慣用語句[kanyougoku] idiom
脅し文句[odoshimonku] threatening words