wherethrough /wɛːˈθɹuː/ adverb2 •(no longer used) Through which.There was also a small window, wherethrough a prisoner might conceivably escape. •(no longer used) By means of which; whereby.They perceived her to be capable of diverse passions, and agitated by many languishing and painfull motions, wherethrough she fell into wearinesse and griefe[…]. — 1603
