The word for today is…
refectory (noun) – A room where meals are served, especially in a college or other institution.
Source : The Free Dictionary
Etymology : “Dining hall,” especially one in a monastery, early 15th century, from Medieval Latin refectorium, from past participle stem of reficere “to remake, restore,” from re- + combining form of facere “to make, do” (from PIE root *dhe- “to set, put”).
