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

詩篇[shihen] book containing a collection of poems
千篇[senpen] many volumes
続篇[zokuhen] continuation
単語篇[tangohen] glossary
短篇小説[tanpenshousetsu] short story

長篇[chouhen] long (e.g. novel, film)
佳篇[kahen] outstanding poem
千篇一律[senpenichiritsu] humdrum
前篇[zenpen] first part