1. An uncommon or infrequently used passageway, hallway, or pathway
The museum's rare corridor housed the most valuable artifacts.
O corredor raro do museu abrigava os artefatos mais valiosos.
2. A geographically or ecologically isolated passage or route with limited occurrence
Scientists discovered a rare corridor of migration for endangered birds.
Cientistas descobriram um corredor raro de migração para pássaros ameaçados de extinção.