dumare Save DMLBS Du Cange dumare , to beset w. briers. to thorne, ~are, spinare ‥ CathA. DUMARE. Laurent. in Amalthea ex Catholico Johannis de Janua : Dumeo, Fio spinosus : Dumo, as, Facio spinosum. Non dicam a Dumus, Spina, hæc ficta verba derivari.