It means voracious, very voracious, gluttonous. It is the name of a genus of birds belonging to the family Icteridae. They are known as squeaky tordos or red-headed tordos. In many texts the term Molobrus is used.
Molobro : Genus of short-billed and conical ichthyd birds, reduced wings and straight tail that inhabit America and feed on insects and seeds.