maldăcon — Lewis & Short
maldăcon, i, n.,
I the gum of the tree called bdellium:
vicina est Bactriana, in qua bdellium nom inatissimum. Arbor nigra est ... gummi alii brochon appellant, alii malacham, alii maldacon,Plin. 12, 9, 19, § 35.