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

引っ手繰り[hittakuri] purse snatching
ぽん引き[ponpiki] tout
アウトライト取引[autoraitotorihiki] outright transaction
亜鉛引[aenbiki] zinc coated (galvanized, galvanised)
一割引き[ichiwaribiki] 10% off sale

引かれる[hikareru] to be charmed by
引き千切る[hikichigiru] to tear off
引きさがる[hikisagaru] to withdraw
引き下げ[hikisage] reduction
引き降ろす[hikiorosu] to haul down

データの先頭[deetanosentou] beginning of data
一頭[ittou] one large animal (horses, cattle, etc.)
一頭立て[ittoudate] one-horse (carriage)
咽頭[intou] pharynx
駅頭[ekitou] station

音頭[ondo] leading a group of people
会頭[kaitou] society president
街頭[gaitou] in the street
核弾頭[kakudantou] nuclear warhead
巻頭[kantou] opening page of book