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

本の[honno] mere
異本[ihon] different edition
一坪本社[hitotsubohonsha] small company headquarters located in Tokyo simply for name value
一本[ippon] one long cylindrical thing
一本気[ippongi] single-minded (esp. personality or person)

一本橋[ipponbashi] (a) log bridge
一本建て[ippondate] (a) single standard
一本松[ipponmatsu] solitary pine tree
一本杉[ipponsugi] (a) solitary cryptomeria tree
一本槍[ipponyari] guiding principle

一本釣[ipponzuri] fishing with a pole
魚釣[sakanatsuri] fishing
渓流釣り[keiryuuzuri] mountain stream fishing
御釣[otsuri] change (i.e. money)
千釣り[senzuri] masturbation (male)

釣上げる[tsuriageru] to raise
釣合う[tsuriau] to balance
釣込む[tsurikomu] to take in
釣り出す[tsuridasu] to pull out a fish