We found 3 dictionaries that define the word be a piece of cake:

General (2 matching dictionaries)

1. be a piece of cake: ESL Idiom Page
2. be a piece of cake: Longman Dictionary of Contemporary English

Miscellaneous (1 matching dictionary)

3. be a piece of cake: Idioms

▸ Words similar to be a piece of cake ▸ Usage examples for be a piece of cake ▸ Idioms related to be a piece of cake ▸ Wikipedia articles (New!) ▸ Words that often appear near be a piece of cake ▸ Rhymes of be a piece of cake ▸ Invented words related to be a piece of cake