ETYM Old Eng. barrere, barere, French barričre, from barre bar. Related to Bar.
1. A structure or object that impedes free movement.
2. Any condition that makes it difficult to make progress or to achieve an objective; SYN. roadblock.
3. Anything serving to maintain separation by obstructing vision or access.

A gate or bar across a toll bridge or toll road which is lifted when the toll is paid; SYN. tollbar.

1. An expressway on which tolls are collected.
2. (From 16th to 19th centuries) Gates set across a road to prevent passage until a toll had been paid.