What is the meaning of Db?

hippopotamus

skin or fat of the hippopotamus, used medicinally

horn (of oxen, gazelles, etc.)

tusk

hollowed-out horn for holding oil, used by Asiatics

horn of the moon

wing or flank of an army

prick, sting

abbreviation of darab (“piece, chunk”)

abbreviation of deadjabaste (“teaspoon”)

Source: wiktionary.org