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

御馳走様でした[gochisousamadeshita] That was a delicious meal (said after meals)
一っ走り[hitoppashiri] spin (as in 'take a car for a spin')
一走り[hitohashiri] spin
逸走[issou] escape
駅伝競走[ekidenkyousou] long-distance relay race

快走[kaisou] fast sailing (running)
滑走[kassou] glide
滑走路[kassouro] runway
完走[kansou] running the race
競走[kyousou] race

跆拳道[tekondoo] Tae Kwon Do
テレビ報道[terebihoudou] television report
悪の道へ誘う[akunomichiheizanau] to lead astray
悪虐無道[akugyakubudou] treacherous
悪道[akudou] wrong course

医事伝道[ijidendou] medical missionary work
医道[idou] the art of medicine
医療伝道[iryoudendou] medical missionary work
一筋道[hitosujimichi] straight road
一道[ichidou] one road