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

伊佐木[isaki] chicken grunt (species of fish, Parapristipoma trilineatum)
一佐[issa] colonel (JSDF)
佐賀県[sagaken] Saga prefecture (Kyushu)
佐官[sakan] field officer
佐幕[sabaku] adherence to the shogunate

三佐[sansa] major (JSDF)
佐ける[tasukeru] to help
少佐[shousa] major
大佐[taisa] colonel
中佐[chuusa] lieutenant colonel