0 to sign a form at a government office to say that you do not have a job and that you want to receive benefit (= money paid by the government) --
Nearly every state has signed on, agreeing to drop their lawsuits and accept a settlement.
Several corporations have signed on to sponsor the tournament.
3 to sign a form at a government office to say that you do not have a job and that you want to receive benefits: --
4 to agree to start doing a new activity or job or start using a new system: --
5 to sign a document saying that you have an agreement with a particular organization: --