1
- a thing, typically a piece of cloth, put in or over a person's mouth to prevent them from speaking or crying out塞口物（指塞于口中使人无法说话或叫喊的布头等）。
1.1
- figurative a restriction on freedom of speech or dissemination of information〈喻〉对言论自由（或信息传播）的限制：
every contract contains a self-signed gag.
每份合同都包含有亲笔签名的不向外透露情况的保证。
1.2
- a device for keeping the patient's mouth open during a dental or surgical operation（牙科或外科手术时用的）张口器, 张器。
verb
gagged, gagging
1
- with obj.（常作be gagged）put a gag on (someone)塞住（某人的嘴）：
she was bound and gagged by robbers in her home.
她在家中被强盗捆绑, 嘴被塞住。
1.1
- figurative (of a person or body with authority) prevent (someone) from speaking freely or disseminating information〈喻〉（当权者）压制（某人的言论自由）; 防止（某人散布信息）：
the government is trying to gag its critics
政府正试图压制批评者的言论
as adj. gagging the minister refused to sign a gagging order.部长拒绝签署压制言论自由的命令。
2
- no obj. choke or retch窒息; 作呕：
he gagged on the sourness of the wine.
他闻到酒的酸味就想呕吐。
词源
Middle English: perhaps related to Old Norse gagháls 'with the neck thrown back', or imitative of a person choking.