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

亜温帯[aontai] subtemperate zone
亜寒帯[akantai] subarctic zone
亜熱帯[anettai] subtropics
安全地帯[anzenchitai] safety zone
衣帯[itai] clothes and obi

一衣帯水[ichiitaisui] (being separated only by a) narrow strip of water
一帯[ittai] region
黄道帯[koudoutai] zodiac
温帯[ontai] temperate zone
下帯[shitaobi] loincloth