bar

1 bar /ˈbɑɚ/ noun
plural bars
1 bar
/ˈbɑɚ/
noun
plural bars
Britannica Dictionary definition of BAR
1 
[count]
a  : a building or room where alcoholic drinks and sometimes food are served — see also sports bar, tiki bar
b  : a counter where alcoholic drinks are served
— see also cash bar, open bar, wet bar
c  : a building or room where a particular food or drink is served — see also salad bar, snack bar
2 
[count] : a straight piece of metal, wood, etc., that is used as a tool, as part of a structure, or to keep people from entering or leaving through a door or window
◊ In U.S. English, bar is used figuratively in phrases like raise/lower the bar and set the bar higher/lower to refer to changing the standard that is used to judge whether someone or something is good, successful, etc.
— see also crossbar, crowbar, parallel bars, uneven bars
3 
[count] : a solid piece of something that is shaped like a rectangle
4 
[count] : a straight line, stripe, or section that is longer than it is wide
— see also bar code, bar graph, task bar, toolbar
5 
[count] formal : something that makes it difficult or impossible to do or achieve something — + to
6 
the bar
a  US : the profession of a lawyer
b  British or the Bar : the profession of a barrister
c  US : the test that a person must pass in order to be a lawyer
7 
[count] music
a  : a line in written music that shows where a measure begins
b  : the beats between two bars in a piece of music

behind bars

tend bar

US
: to work as a bartender : to prepare and serve drinks at a bar
2 bar /ˈbɑɚ/ verb
bars; barred; barring
2 bar
/ˈbɑɚ/
verb
bars; barred; barring
Britannica Dictionary definition of BAR
[+ object]
1 
: to put a bar or a set of bars in front of a door, window, etc., so that people cannot go in or out of it
2 
: to put something in a road, path, etc., so that people cannot get by
3 
a  : to prevent or forbid (someone) from doing something
b  : to prevent or forbid (something)

no holds barred

— see 2hold
3 bar /ˈbɑɚ/ preposition
3 bar
/ˈbɑɚ/
preposition
Britannica Dictionary definition of BAR
1 
— used in the phrase bar none to emphasize that a statement is completely true
2 
British : except for : barring