vocal sac

noun

1. zoology either of the loose folds of skin on each side of the mouth in many male frogs that can be inflated and act as resonators

Example Sentences

The vocal sac was brownish gray; the iris was a bright golden color.

From Project Gutenberg

The belly and tips of digits were white; the vocal sac was purplish brown, and the iris was dark grayish gold.

From Project Gutenberg

Although Osteocephalus and Argenteohyla have similar vocal sac structure, they are obviously distinct.

From Project Gutenberg

The vocal sac structure of Trachycephalus is like that of Phrynohyas and therefore further distinguishes it from Osteocephalus.

From Project Gutenberg

Osteocephalus and Argenteohyla are similarly distinguished from Phrynohyas and Trachycephalus on the basis of vocal sac structure.

From Project Gutenberg