ic·ing 
/ˈaɪsɪŋ/ noun
/ˈaɪsɪŋ/ noun icing on the cake
: something extra that makes a good thing even better
▪ The concert itself was great, and getting to meet the band afterward was (the) icing on the cake.
▪ The concert itself was great, and getting to meet the band afterward was (the) icing on the cake.
