(engineering) Any intermediate object that connects a smaller part to a larger part, the smaller part typically projecting sideways from the larger part.
2005, Todd Downs, The Bicycling Guide to Complete Bicycle Maintenance & Repair for Road and Mountain bikes, ISBN1594863423:
To determine if your frame has this bottom bracket type, look for a notched and possibly knurled lockring on the left side (the side without the chainrings).
2013, Laura Mitchell, An Introduction to Orthodontics, ISBN0199594716, page 220:
Not only does the attachment on the tooth surface (called a bracket) allow the tooth to be moved vertically or tilted, but also a force couple can be generated by the interaction between the bracket and an archwire running through the bracket.
The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.
Next, since so much social activity is defined by being bracketed out of the world of ongoing events, it becomes possible that outside such bracketed episodes, […] people are — especially beforehand, but also afterwards — to some extent "out of role", and so off their guard.