defunct = dead ie those notified since last court
Warden = churchwarden - probably nothing to do with defuncts unles he was a replacement appointed to fill a vacancy (there should be 4/parish) caused by a 'defunct' - two elected by parishioners and 2 appointed by Vicar at around this period - some elections caused much strife if wardens and vicar didn't agree) - in 18th C will you often got a page before the wills naming defuncts and the churchwardens