bracket noun
1 brackets marks round extra information in writing
ADJ. angle, curly, round, square
VERB + BRACKET enclose sth in, give sth in, put sth in The prices are given in square brackets.
PREP. in The words in brackets should be deleted. | inside, outside, within The numbers outside the curly brackets are the sales figures.
2 range
ADJ. age, income, price, tax | higher, top, upper | middle | lower
PREP. in/within These machines are in the higher price bracket. | outside people outside this age bracket
You can also check other dicts: bracket (English, 中文解释 ), wordnet sense, Collins Definition