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

一封[ippuu] sealed letter
開封[kaifuu] unsealed letter
完封[kanpuu] complete blockade (seal)
旧封[kyuuhou] former fief
厳封[genpuu] sealing hermetically

言論を封殺する[genronwofuusatsusuru] to suppress the freedom of speech
御封[gofu] talisman
再封鎖[saifuusa] reblocking
三封[sanpuu] forced out on third
全封地[zenhouchi] the whole fief

御金[okane] money
金糸雀[kinshijaku] canary (esp. the island canary, Serinus canaria)
違約金[iyakukin] penalty for contract breach
一刻千金[ikkokusenkin] every moment is precious
一字千金[ichijisenkin] word of great value

一時金[ichijikin] lump sum
一時賜金[ichijishikin] lump-sum grant
引き金を引く[hikiganewohiku] to pull the trigger
引当金[hikiatekin] reserves
隠れ借金[kakureshakkin] hidden debts