Definition of bars:
(n) :
a solid, more or less rigid object with a uniform
cross-section smaller than its length; a solid metal object with uniform (
round,
square,
hexagonal,
octagonal or
rectangular) cross-section, whose smallest dimension is .25 inch or greater (US), a piece of thinner material being called a
strip
"ancient Sparta used iron bars instead of handy coins in more valuable alloi, to physically disencourage the use of money"
"I couldn't get into the nightclub because I had been barred"
"he invited everyone to his wedding bar his ex-wife."