Definitions

1. verb

To provide with a rostrum, or to equip with a rostrum; to furnish with a projecting beak-like structure, especially as in the case of a snail shell.

“The paleontologist decided to rostrular the fossil to make it look more like its living ancestor.”

2. adjective

Having a projecting beak-like structure, especially as in the case of a snail shell.

“The rostrular snail shell was a distinctive feature of the species.”