PLEDGE

[noun] [C] - a promise, or something that is given as a sign that you will keep a promise, esp. one to give money or to be a friendWhen you make a pledge, you should always try to honour/fulfil it.All the candidates have given/made pledges not to raise taxes if they are elected. [+ to infinitive]He's made a pledge that he won't drink any alcohol for a month. [+ that clause]Thousands of people made pledges (= promised to give money) to the Children in Need charity campaign.I give you this ring as a pledge (= sign) of my everlasting love for you.(humorous) What's this then, you're only drinking orange juice - have you taken/signed the pledge (= decided to stop drinking alcohol) or something?