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

悪水[akusui] undrinkable water
井戸水[idomizu] well water
一衣帯水[ichiitaisui] (being separated only by a) narrow strip of water
一水[issui] current (of water)
溢水[issui] inundation

飲水量[insuiryou] amount of drinking
飲料水[inryousui] drinking water
烏の行水[karasunogyouzui] quick bath
雲水[unsui] itinerant priest
塩化水素[enkasuiso] hydrogen chloride

薙ぎ倒す[nagitaosu] to mow down
薙鉈[naginata] halberd
神薙ぎ[kannagi] medium
薙ぎ払う[nagiharau] to mow down
薙刀術[naginatajutsu] art of using a naginata (halberd)

薙ぐ[nagu] to mow down
水薙鳥[mizunagidori] petrel (esp. petrels of family Procellariidae)
大水薙鳥[oomizunagidori] streaked shearwater (species of seabird, Calonectris leucomelas)
草薙剣[kusanaginotsurugi] Kusanagi no Tsurugi (alternate name for Ama-no-Murakumo no Tsurugi; the sword of the Imperial regalia)

鳥竜茶[uuroncha] oolong tea
愛鳥[aichou] pet bird
鳥渡[choto] just a minute
一石二鳥[issekinichou] killing two birds with one stone
益鳥[ekichou] beneficial bird

黄鳥[kouchou] Japanese bush warbler (Cettia diphone)
伽藍鳥[garanchou] pelican
火食鳥[hikuidori] cassowary (Casuarius spp.)
花鳥[kachou] flowers and birds
花鳥風月[kachoufuugetsu] beauties of nature