whence, adv.Cad as, cá has.Do you know (from) whence he came? (i) bhfuil a fhios agat cá has, a dtáinig sé? (ii) bhfuil a fhios agat cárb as é, cad as dó?The place whence ye are come, an áit ar tháinig sibh as. Whence I conclude that . . ., mar sin de measaim . . .