1brack·et 
/ˈbrækət/ noun
plural brack·ets /ˈbrækət/ noun [count] 1 : an object that is attached to a wall and used to support or hold up something (such as a shelf)
▪ The shelf is held up with two brackets. ▪ There are wall brackets in the garage for the rakes and shovels. 2 : a category that includes a certain range of incomes, ages, etc.
▪ She is taller/shorter than average for her age bracket. ▪ He earned enough to put him in a higher tax bracket. ▪ She is now in a lower/higher income bracket than before. 3 a : either one of a pair of marks [ ] or < > used to enclose words or mathematical symbols — usually plural ▪ The title appears in/within brackets at the top of the page. ◊The marks [ ] are also called square brackets and the marks < > are also called angle brackets.
b Brit : parenthesis
▪ The shelf is held up with two brackets. ▪ There are wall brackets in the garage for the rakes and shovels.
▪ She is taller/shorter than average for her age bracket. ▪ He earned enough to put him in a higher tax bracket. ▪ She is now in a lower/higher income bracket than before.
b Brit : parenthesis
