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

御手上げ[oteage] all over
お上りさん[onoborisan] countryside people (in town)
上さん[kamisan] (one's) wife
其の上で[sonouede] moreover
其の上[sonoue] in addition

それ以上[soreijou] further
たくし上げる[takushiageru] to roll up or pull up (sleeves, skirt, etc.)
捲り上げる[makuriageru] to tuck (e.g. sleeves)
安上り[yasuagari] cheap
案の上[annojou] just as one thought

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