What is release from a post, or from the performance of duty, by the intervention of others, by discharge, or by relay; as, a relief of a sentry. For this relief much thanks; ;tis bitter cold. Shak called?

relief — Release from a post, or from the performance of duty, by the intervention of others, by discharge, or by relay; as, a relief of a sentry. For this relief much thanks; ;tis bitter cold. Shak. (Webster's 1913.)