any unit used in linear measurement, as the inch, foot, meter, etc. Origin of linear measure. 1885-1890. First recorded in 1885-90.
Realistically, you could put any icing you wanted on a carrot cake. The wonderful beauty of cooking is that you can make it to your liking. But, the traditional icing that most people put on carrot cake is cream cheese icing.
Use icing tulips to enhance a bright and cheerful birthday or other special occasion cake for a bakery-worthy look. Tulip-themed cakes make ideal Mother's Day, Easter and garden tea party desserts.