hesternal UK /hɛsˈtɜːnl̩/US /hɛsˈtɝn(ə)l/ adjective1 •(literary, no longer used) Of or pertaining to yesterday.[A]t last, this happy fellow, on a high / Bed laid, and dawbed over with thick ointments, / Extends his rigid heels towards the door; but him / The hesternal Romans, with cover'd head, sustained. — 1795