Resembling or similar to a belly in appearance or form; having rounded, protruding, or bulging characteristics.
From 'belly' plus the adjective suffix '-like' (resembling), following standard English adjective formation. Common pattern for creating descriptive terms.
The '-like' suffix is wonderfully productive in English—you can attach it to almost any noun to create new descriptive words, which is why English speakers intuitively understand even very new '-like' words.
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