Related Clues:
- Vital anatomical passage
- Main, e.g.
- Tear conduit
- What's totally tubular?
- Tubular channel
- Heating system vent
- It brings a tear to the eye
- Tight space in which chase scenes are sometimes set
- Windpipe, for one
- Plane's route
- Pilot's route
- Tube for conveing cable, liquid etc
- Enclosed conduit for fluid
- See 26
- Ventilation passage