Discharge  —v. (-ging) 1 release (a prisoner); allow (a patient, jury) to leave. 2 dismiss from office or employment. 3 fire (a gun etc.). 4 throw; eject. 5 emit, pour out (pus etc.). 6 (foll. By into) (of a river etc.) Flow into (esp. The sea). 7 a carry out (a duty or obligation). B relieve oneself of (a debt etc.). C relieve (a bankrupt) of residual liability. 8 law cancel (an order of court). 9 release an electrical charge from. 10 a relieve (a ship etc.) Of cargo. B unload (cargo). —n. 1 discharging or being discharged. 2 certificate of release, dismissal, etc. 3 matter discharged; pus etc. 4 release of an electric charge, esp. With a spark.