Waterway connecting Mediterranean and Red Seas.

Waterway connecting Atlantic and Pacific.

Area surrounding and including canal.

Treatment for infected tooth pulp.

Waterway connecting Great Lakes, Atlantic.

Passage for sound to eardrum.

Channel containing spinal cord, nerves.

Tube for digestion and absorption.

Passage for sound to eardrum.

Major waterway for navigation, commerce.

Terminal part of the digestive tract.

Passage for baby during childbirth.

(slang) birth canal

Balance and orientation sensory structures.

Spinal cord's central cerebrospinal fluid channel.