› GOVERNMENT, LAW controlled very carefully: tight controls/security/restrictions The talks were held amid tight security in London.
› FINANCE, MANAGEMENT if money or time is tight, there is only just enough of it: Finances are tight and no university has spare cash.tight budget/deadline/schedule We're working to a very tight schedule.
› ECONOMICS, COMMERCE if there is a tight market, there is not as much of something available as is wanted or needed: They should not restrict so much land in an already tight and overpriced housing market. A tight labor market is an employer's nightmare.
keep a tight rein on sth › to control something, especially spending, in a very careful way: The chancellor was urged to keep a tight rein on public finances.