Definition of "icing on the cake" in English

Noun

1. A thing which intensifies the appreciation of something already good, or the regretting of something already bad.

   • We went out for dinner and dancing and the icing on the cake was when my boyfriend proposed to me as we danced.
   • I was having a really bad day at work, but the icing on the cake was getting soaked by a car passing through a puddle.