bar

noun

1. A solid, more or less rigid object of metal or wood with a uniform cross-section smaller than its length.
2. A solid metal object with uniform (round, square, hexagonal, octagonal or rectangular) cross-section; in the US its smallest dimension is ¹⁄₄ inch or greater, a piece of thinner material being called a strip.
3. A cuboid piece of any solid commodity.
4. A broad shaft, band, or stripe.
5. A long, narrow drawn or printed rectangle, cuboid or cylinder, especially as used in a bar code or a bar chart.
6. Any of various lines used as punctuation or diacritics, such as the pipe ⟨|⟩, fraction bar (as in 12), and strikethrough (as in Ⱥ), formerly (obsolete) including oblique marks such as the slash.
7. The sign indicating that the characteristic of a logarithm is negative, conventionally placed above the digit(s) to show that it applies to the characteristic only and not to the mantissa.
8. A similar sign indicating that the charge on a particle is the negative of its usual value (and that consequently the particle is in fact an antiparticle).
9. A business selling alcoholic drinks for consumption on the premises, or the premises themselves; a public house.
10. The counter of such premises.
11. A counter, or simply a cabinet, from which alcoholic drinks are served in a private house or a hotel room.
12. Premises or a counter serving any type of beverage.
13. An informal establishment selling food to be consumed on the premises.
14. An establishment offering cosmetic services.
15. An official order or pronouncement that prohibits some activity.
16. Anything that obstructs, hinders, or prevents; an obstruction; a barrier.
17. A dividing line (physical or notional) in the chamber of a legislature beyond which only members and officials may pass.
18. The railing surrounding the part of a courtroom in which the judges, lawyers, defendants and witnesses stay.
19. The bar exam, the legal licensing exam.
20. Collectively, lawyers or the legal profession; specifically applied to barristers in some countries, but including all lawyers in others.