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

異朝[ichou] foreign court
一朝[icchou] temporarily
一朝一夕[icchouisseki] in a day
一朝一夕に[icchouissekini] in a day
王朝[ouchou] dynasty

元朝[ganchou] New Year's morning
今朝方[kesagata] this morning
参朝[sanchou] visiting the palace
正朝[seichou] legitimate dynasty
早朝[souchou] early morning

助番[sukeban] leader of a female gang
ブロック番号[burokkubangou] block number
暗唱番号[anshoubangou] personal identification number
一貫番号[ikkanbangou] serial number
一番[ichiban] best

一番[hitotsugai] pair
一番鶏[ichibandori] first cockcrowing
一番手[ichibante] first player
一番乗り[ichibannori] leader of a charge
一番線[ichibansen] track no. 1