Definitions

1. noun

A species of large tern (Thalasseus pelagicus) found in the Pacific and Indian Oceans, characterized by a white belly.

“The whitebelly tern was a common sight on the coast during the summer months.”

2. noun

A type of seabird, often mistaken for a gull.

“The whitebelly tern, with its distinctive white belly, was a favorite among birdwatchers.”