Definitions

1. noun

A dive or fall from an aircraft or other vehicle that is flying or hovering in the air, often at a low altitude.

“The pilot attempted an emergency underdive to avoid the collision course with the mountains.”

2. verb

To dive or fall from an aircraft or other vehicle that is flying or hovering in the air, often at a low altitude.

“The pilot underdived the aircraft to avoid the obstacle in the runway.”