to buy something that is defective or worthless
欠陥があるか価値がないものを買う (kengkan ga aru ka kachi ga nai mono o kau)
"He bought a lemon when he got that used car."
"彼はその中古車を買ったとき、レモンを買った。" (kare wa sono chūko-sha o katta toki, **remon o katta**.)
a very clever or talented person
to improve an existing product or idea
a perfect or happy ending, like in a fairy tale
very angry
very special or rare
to start something again in a new way