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

お大事に[odaijini] take care of yourself
暗黒大陸[ankokutairiku] Dark Continent (i.e. Africa)
伊勢大神宮[isedaijinguu] the Grand Shrines of Ise
伊勢大廟[isetaibyou] the Grand Shrines of Ise
偉大[idai] greatness

医科大学[ikadaigaku] medical school
医大[idai] medical university
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一大[ichidai] one large ...
一大事[ichidaiji] serious affair

ゼロ地点[zerochiten] ground zero
圧痛点[attsuuten] pressure point
一致点[icchiten] point of agreement
一点[itten] speck
一点機[ichitenki] turning point

一点張り[ittenbari] persistence
引火点[inkaten] flash point
遠地点[enchiten] apogee
遠日点[enjitsuten] aphelion

螟蛾[meiga] pyralid (any moth of family Pyralidae, many of which have larvae that devour foodstuffs)
誘蛾灯[yuugatou] light trap for killing insects
毒蛾[dokuga] poisonous moth
夜盗蛾[yotouga] cabbage armyworm
衣蛾[iga] Tinea translucens (species of clothes moth)

黄色雀蛾[kiirosuzume] yellow hawk moth
灯蛾[hitoriga] garden tiger moth (Arctia caja)
尺蛾[shakuga] geometer moth
蚕蛾[kaikoga] silkworm moth

螟蛾[meiga] pyralid (any moth of family Pyralidae, many of which have larvae that devour foodstuffs)
螟虫[zuimushi] pyralid larva
一点大螟蛾[ittenoomeiga] yellow stem borer (species of moth, Scirpophaga incertulas)
三化螟蛾[sankameiga] yellow stem borer (species of moth, Scirpophaga incertulas)

二化螟蛾[nikameiga] striped stem borer (species of moth, Chilo suppressalis)
稲の螟虫[inenozuimushi] striped stem borer larva
螟蛉[meirei] hornworm