What does agalloch or agallochum mean?
The definition of agalloch and agallochum
Ag”al*loch, A*gal”lo*chum, n.
Etym: [Gr. aguru, Heb. pl. ahalim.]

A soft, resinous wood (Aquilaria Agallocha) of highly aromatic smell, burnt by the orientals as a perfume. It is called also agalwood and aloes wood. The name is also given to some other species.