sorghum means: Cereal grass that has cornlike leaves, clusters of cereal grains at the top and tall stalks. You can use the stalks to make light molasses, called “sorghum syrup” or just “sorghum”. (in Cooking Dictionary)

What else does sorghum mean?

Cultivated grass (Sorghum bicolor) Many varieties are native to sub-Saharan Africa and can be grown as forage or for syrup. (in Merlin Dictionary)

This syrup is made with the juice from this plant. (in Merlin Dictionary)