[singular] the beginning of the day of trading, especially on a stock exchange; the price of a share, currency, etc. at this time
（尤指证券交易所）开始交易；开盘价◆Stocks are set to rise at Friday's open.
股票周五开盘时很可能会上涨。 OPP close ⨁a flat / low / weak open
平价／低价开盘；开盘疲软 ⨁ a firm / high / strong open
开实盘；高价开盘；开盘坚挺