Pack \Pack\, n. 1. (Med.) In hydropathic practice, a wrapping of blankets or sheets called {dry pack}, {wet pack}, {cold pack}, etc., according to the condition of the blankets or sheets used, put about a patient to give him treatment; also, the fact or condition of being so treated. 2. (Rugby Football) The forwards who compose one half of the scrummage; also, the scrummage. {Pack and prime} {road or way}, a pack road or bridle way.