malvesey (Anglo-Norman) comes from Italian Malvasia, from Ancient Greek Μονεμβασία, from Ancient Greek ἔμβασις, from Ancient Greek βάσις, from Proto-Hellenic gʷə́tis, from Proto-Indo-European gʷémtis, from Proto-Indo-European gʷem- — to step.
malvesey (Anglo-Norman): malvoisie