It refers to:
* A dedication in a book, piece of music, or other work of art, acknowledging the person or group to whom the work is dedicated.
* A formal act of dedicating something to someone or something else.
For example:
* "The book was dedicated to his wife, who inspired him to write it."
* "The statue was dedicated to the memory of the fallen soldiers."
The word "Widmung" is closely related to the English word "dedication" and shares the same root, which derives from the Latin word "dedicare."