ETYM Old Eng. barre, French barre, from Late Lat. barra, W. bar the branch of a tree, bar, baren branch, Gael. and Irish barra bar.
1. A rigid piece of metal.
2. A rod of metal used to obstruct openings.
3. (Usually in the plural) Jail.
4. A counter where one can purchase food or drink.
5. A submerged (or partly submerged) ridge in a river or along a shore.
6. (Law) A railing that encloses the part of the courtroom where the the judges and lawyers sit and the case is tried.
7. A unit of pressure equal to a million dynes per square centimeter.
A unit of pressure equal to 0.99 atmospheres or 14.233 psi.