westwork /ˈwɛstwɜːk/ noun1 •The vaulted monumental structure at the western end of a church constructed in some medieval styles, flanked by two towers and containing the entrance.Facing the raised sanctuary over the vast crypt they also often erected at the west end of the nave a towerlike structure with vaulted stories, that we call the "westwork." — 1987 formswestworks