1. 肚子(儿童用语或对儿童说话时用)
Your tummy is the part of the front of your body below your waist. Tummy is often used by children or by adults talking to children.

2. 肚肚(儿语或对儿童说话时用)
You can use tummy to refer to the parts inside your body where food is digested. Tummy is often used by children or by adults talking to children.

1. an enlarged and muscular saclike organ of the alimentary canal
the principal organ of digestion

Synonym: stomachtumbreadbasket

2. slang for a paunch

Synonym: potpotbellybay windowcorporation