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

白地[akarasama] plain
アジア太平洋地域[ajiataiheiyouchiiki] Asia-Pacific region
ゼロ地点[zerochiten] ground zero
リーダーシップ的地位[riidaashipputekichii] leadership position
ルーラル地域[ruuraruchiiki] rural area

渥地[akuchi] marshland
安全地帯[anzenchitai] safety zone
意気地[ikuji] self-respect
意気地無し[ikujinashi] coward
意気地のない[ikujinonai] spineless

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