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

悪銭[akusen] ill-gotten money
一紙半銭[isshihansen] small sum
金銭[kinsen] money
金銭的ダメージ[kinsentekidameeji] monetary damages
古銭[kosen] old coin

古銭学[kosengaku] numismatics
口銭[kousen] commission
自動金銭出入機[jidoukinsenshutsunyuuki] automatic teller machine
借銭[shakusen] debt
守銭奴[shusendo] miser