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

懐旧[kaikyuu] recalling the old days
旧ソ連[kyuusoren] former Soviet Union
旧悪[kyuuaku] past misdeeds
旧衣[kyuui] worn-out clothes
旧詠[kyuuei] ancient poems

旧怨[kyuuen] old grudge
旧縁[kyuuen] old relationship
旧恩[kyuuon] old favors
旧仮名遣[kyuukanazukai] former (i.e. before the post-WWII reforms) kana usage in writing the readings of kanji

暗黒大陸[ankokutairiku] Dark Continent (i.e. Africa)
海陸[kairiku] land and sea
旧大陸[kyuutairiku] the Old World
緊急着陸[kinkyuuchakuriku] emergency landing
空陸[kuuriku] land and air

在日米陸軍[zainichibeirikugun] US Army, Japan
上陸[jouriku] landing
上陸用舟艇[jourikuyoushuutei] landing craft
水陸[suiriku] land and water