弄り回す[ijirimawasu] to tinker with
どさ回りをやる[dosamawariwoyaru] to go on tour
螺子回し[nejimawashi] screwdriver
ウイック回転[uikkukaiten] Wick rotation
挨拶回り[aisatsumawari] courtesy call

一回[ikkai] once
ひと回り[hitomawari] one turn
一回忌[ikkaiki] first death anniversary
一回戦[ikkaisen] first game
一回分[ikkaibun] dose

アジア太平洋地域[ajiataiheiyouchiiki] Asia-Pacific region
ルーラル地域[ruuraruchiiki] rural area
安全域[anzeniki] safety margin
異域[iiki] foreign lands
域外[ikigai] outside the area

域内[ikinai] inside the area
円域[eniki] yen bloc
音域[oniki] singing range
音域外[onikigai] outside the singing range
海域[kaiiki] area of ocean

亜温帯[aontai] subtemperate zone
亜寒帯[akantai] subarctic zone
亜熱帯[anettai] subtropics
安全地帯[anzenchitai] safety zone
衣帯[itai] clothes and obi

一衣帯水[ichiitaisui] (being separated only by a) narrow strip of water
一帯[ittai] region
黄道帯[koudoutai] zodiac
温帯[ontai] temperate zone
下帯[shitaobi] loincloth

アルファ線[arufasen] alpha rays
エックス線[ekkususen] X-ray
サイン曲線[sainkyokusen] sinusoid
スピード線[supiidosen] speed lines
緯線[isen] parallel

一次線輪[ichijisenrin] primary coil
一線[issen] line
一直線[icchokusen] straight line
一番線[ichibansen] track no. 1
一塁線[ichiruisen] first-base line