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rack

1 rack /ˈræk/ noun
plural racks
1 rack
/ˈræk/
noun
plural racks
Britannica Dictionary definition of RACK
[count] : a frame or stand that has shelves, hooks, slots, etc., in which or on which you place things
see also dish rack, roof rack
the rack : a machine used in the past to hurt people by stretching their bodies sometimes used figuratively
[count] technical : a bar with teeth that fit into a gear or a wheel in a machine
[count] : a pair of antlers
[count] US, informal : 1bed 1
[count] US
: a triangular frame that is used to group the balls together in a billiard game
: a group of billiard balls that have been set up with a rack

off the rack

US
: in a store where clothes are sold in different sizes that are not made to fit a particular person
see also off-the-rack

on the rack

British, informal
: in a very bad or difficult situation
compare 3rack, 4rack
2 rack /ˈræk/ verb
racks; racked; racking
2 rack
/ˈræk/
verb
racks; racked; racking
Britannica Dictionary definition of RACK
[+ object]
: to cause (someone or something) to suffer pain or damage usually used as (be) racked
US : to put (balls) in a rack for a game of billiards

rack up

[phrasal verb]
rack up (something) informal
: to achieve or get (something) as time passes : accumulate

rack your brain/brains

: to think very hard in order to try to remember something, solve a problem, etc.
3 rack /ˈræk/ noun
plural racks
3 rack
/ˈræk/
noun
plural racks
Britannica Dictionary definition of RACK
[count, noncount]
: a cut of meat from a lamb or pig that includes some of the ribs
compare 1rack, 4rack
4 rack /ˈræk/ noun
4 rack
/ˈræk/
noun
Britannica Dictionary definition of RACK
[noncount]
: the state of being destroyed or ruined
compare 1rack, 3rack