1.[countableC, uncountableU]DFD a cake that has dried fruit in it 水果[果脯,果子]蛋糕
2[countableC] informalNORMAL someone who is mentally ill or behaves in a strange way 疯子,怪人
He’s an absolute fruitcake.
他绝对是个疯子。
You really are nutty as a fruitcake (=crazy).
你真是疯了。
Examples from the Corpus
fruitcake• Vividmemories of her childhoodholidays go on and on about birthday cakes, pumpkin pies, fruitcakes, and homemadecandy.• I figured he must have been a real fruitcake to write a letter like that.• They're largely similar to the Christmas versions but minus the fruitcake and cards and plusbeachbags and sunhats.• He wasn't going to show this fruitcake he was nervous.