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

一翼[ichiyoku] (a) part
右翼[uyoku] right-wing (politics)
右翼団体[uyokudantai] right-wing organization (clique) (organisation)
羽翼[uyoku] wings and feathers
下げ翼[sageyoku] wing flap

左翼[sayoku] left-wing
主翼[shuyoku] main wings (of an aeroplane, airplane)
小心翼翼[shoushinyokuyoku] very timid
上翼[jouyoku] upper wing of a plane
全翼飛行機[zenyokuhikouki] flying wing