d. adjective 1noun 2 adjective1 •Abbreviation of died.The first is the account by Adomnán of Iona (d. 704) of the Holy Places, in which he included representations of the Holy Sepulchre and other churches. — 1992 noun2 •(informal) Abbreviation of defence/defense. •(no longer used, historical) Abbreviation of denarius, used for English penny and English pence.